<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primarymultiple-choice-questions-mcqsprimary"><Primary>Multiple Choice Questions (MCQs)</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> Lichens are the associations of</p> <p class="fragment">(a) Bacteria and fungus <br> (b) Algae and bacterium <br> (c) Fungus and algae <br> (d) Fungus and virus </p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> <span style="color:blue">Multiple choice questions (MCQs)</span> $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primarymultiple-choice-questions-mcqsprimary-1"><Primary>Multiple Choice Questions (MCQs)</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> (c)</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> <span style="color:blue">Multiple choice questions (MCQs)</span> $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primarymultiple-choice-questions-mcqsprimary-2"><Primary>Multiple Choice Questions (MCQs)</Primary></h4> <hr> <div class="text-container"> <p><strong>Sol.</strong> Lichens represent a positive (beneficial) interaction between two different species, one fungus and another algae.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> <span style="color:blue">Multiple choice questions (MCQs)</span> $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primarymultiple-choice-questions-mcqsprimary-3"><Primary>Multiple Choice Questions (MCQs)</Primary></h4> <hr> <div class="text-container"> <ul> <li> <p>Rest of the species combination or associations are not true for lichens.</p> </li> <li> <p><strong>Note</strong> Algal species is called as phycobiont while fungal species is referred to as mycobiont.</p> </li> <li> <p>The fungal species comes from two classes Ascomycetes (ascolichen) and Basidiomycetes (basidiolichen).</p> </li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> <span style="color:blue">Multiple choice questions (MCQs)</span> $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primarymultiple-choice-questions-mcqsprimary-4"><Primary>Multiple Choice Questions (MCQs)</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> Which of the following is a partial root parasite?</p> <p class="fragment">(a) Sandal wood <br> (b) Mistletoe <br> (c) Orobanche <br> (d) Ganoderma </p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> <span style="color:blue">Multiple choice questions (MCQs)</span> $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primarymultiple-choice-questions-mcqsprimary-5"><Primary>Multiple Choice Questions (MCQs)</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> (a)</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> <span style="color:blue">Multiple choice questions (MCQs)</span> $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primarymultiple-choice-questions-mcqsprimary-6"><Primary>Multiple Choice Questions (MCQs)</Primary></h4> <hr> <div class="text-container"> <p><strong>Sol.</strong> <strong>Sandal wood</strong> (Santalum album) is partial root parasite.</p> <ul> <li><strong>Mistletoe</strong> (Viscum) is considered as hemiparasite which derive a part of nourishment from host plant.</li> <li>Orobanche is a holo parasite which infects species from favciae i.e., beans, loranthus, Ganoderma are parasite, basidiocarpic mushrooms.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> <span style="color:blue">Multiple choice questions (MCQs)</span> $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primarymultiple-choice-questions-mcqsprimary-7"><Primary>Multiple Choice Questions (MCQs)</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> Which one of the following organisms reproduces sexually only once in its life time?</p> <p class="fragment">(a) Banana plant <br> (b) Mango <br> (c) Tomato <br> (d) Eucalyptus </p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> <span style="color:blue">Multiple choice questions (MCQs)</span> $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primarymultiple-choice-questions-mcqsprimary-8"><Primary>Multiple Choice Questions (MCQs)</Primary></h4> <hr> <div class="text-container"> <p><strong>Thinking Process</strong></p> <ul> <li>Reproductive phase in higher plants is characterised by appearance of flowers.</li> <li>Sexually there are two types of flowering plants: monocarpic and polycarpic.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> <span style="color:blue">Multiple choice questions (MCQs)</span> $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primarymultiple-choice-questions-mcqsprimary-9"><Primary>Multiple Choice Questions (MCQs)</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> (a)</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> <span style="color:blue">Multiple choice questions (MCQs)</span> $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primarymultiple-choice-questions-mcqsprimary-10"><Primary>Multiple Choice Questions (MCQs)</Primary></h4> <hr> <div class="text-container"> <p><strong>Sol.</strong> Monocarpic plants are those plants which flower once in their life e.g., all annuals (wheat, rice), biennials like carrot and radish, perennial like bamboo.</p> <ul> <li> <p>Banana is a monocarpic plant, so reproduces sexually once in its lifetime.</p> </li> <li> <p>Rest of the options are incorrect.</p> </li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> <span style="color:blue">Multiple choice questions (MCQs)</span> $\rightarrow$ Very short answer type questions $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary"><Primary>Very Short Answers Type Questions</Primary></h4> </div>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-1"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> Species that can tolerate narrow range of temperature are called……</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-2"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> <strong>Stenothermal Organisms</strong></p> <ul> <li> <p>Temperature, a major abiotic factor affects the metabolism, activity and so many other physiological functions of the organism</p> </li> <li> <p>On the basis of temperature tolerance, organism can be classified as eurythermal and stenothermal.</p> </li> </ul> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-3"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p>(i) Eurythermal organisms can tolerate and thrive in a wide range of temperatures.</p> <p>(ii) Stenothermal organisms tolerate only a narrow range of temperatures.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-4"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> What are eurythermic species?</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-5"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> Eurythermic species are those species which possess or show a wide range of temperature tolerance.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-6"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> Species that can tolerate wide range of salinity are called……..</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-7"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> <strong>Euryhaline species</strong></p> <ul> <li>Water, another major abiotic component affects the life of organism.</li> <li>The quality of water like $\mathrm{pH}$, salinity (salt concentration) are water related problems faced by aquatic organisms, organisms or species that can tolerate wide range of salinity are regarded as <strong>euryhaline Species</strong>.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-8"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> Define stenohaline species.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-9"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> Stenohaline species are those species which show a narrow range of salinity tolerance.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-10"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> What is the interaction between two species called?</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-11"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> Interaction between two species is called interspecific interaction.</p> <ul> <li>These could be beneficial, detrimental or neutral to one of the species or both.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-12"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> What is commensalism?</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-13"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> Commensalism is an interaction where one species is benefitted and the other is unaffected, e.g., an orchid growing as an epiphyte on a mango branch.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-14"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> Name the association in which one species produces poisonous substance or a change in environmental conditions that is harmful to another species.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-15"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> Parasitism is the association in which one species produces poisonous substance or a change in environmental conditions that is harmful to another species.</p> <ul> <li>Examples are protozoans such as Amoeba and Plasmodium vivax that lives in human body and cause diseases.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-16"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> What is mycorrhiza?</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-17"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> Mycorrhiza is a symbiotic association between a fungus and the root of higher plants like conifers i.e., Pinus and leguminous plants.</p> <ul> <li><strong>Note</strong> Fungal hyphae get protection and nourishment from its symbiont, while in turn helps in absorption of organic solutes to higher plants.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-18"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> Emergent land plants that can tolerate the salinities of the sea are called.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-19"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> Halophytes emergent land plants that can tolerate the salinities of sea and are even able to maintain their water supply from the same are called as halophytes.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-20"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> Why do high altitude areas have brighter sunlight and lower temperatures as compared to the plains?</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-21"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> At high altitude the sun light is brighter as compared to plains, it is because of reduced distance from the sun and particles free air.</p> <ul> <li>Similarly lower temperatures are because of lower atmospheric pressure which is more in plains as compared to high altitude.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-22"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> What is homeostasis?</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-23"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> Homeostasis is the tendency of the organism to maintain a constant internal environment despite varying external environmental conditions like temperature.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-24"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> Define aestivation.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-25"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> Aestivation is a behavioural adaptation to avoid extreme heat and dessication in summer season.</p> <ul> <li> <p>In which the organism slows down its metabolic activities.</p> </li> <li> <p>It is also known as summer sleep.</p> </li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-26"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> What is diapause and its significance?</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-27"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> It is a stage of suspended development that some organisms like zooplanktons in lakes and ponds, adopt to survive under unfavourable conditions.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-28"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> What would be the growth rate pattern, when the resources are unlimited?</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-29"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> In case of unlimited resources, the pattern of growth rate is <strong>exponential</strong>.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-30"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> What are the organisms that feed on plant sap and other plant parts called?</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-31"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> The organism that feed on plant sap and other parts of plants are termed as <strong>phytophagous</strong>.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-32"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> What is high altitude sickness?</p> <ul> <li>Write its symptoms.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-33"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> High altitude sickness is experienced by the people going to high altitudes, where oxygen concentrations are low and the body system reacts by developing the symptoms like nausea, headache and heart palpitations.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-34"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> Give a suitable example for commensalism.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-35"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> An interaction between blue whale and the barancle growing on its back is an example of commensalism (interspecific relation) between them.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-36"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> Define ectoparasite and endoparasite and give suitable examples.</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-37"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> Ectoparasite feeds on the external surface of the host organism, e.g., Lice on humans and ticks on dogs.</p> <ul> <li>Many marine fish are infested with ectoparasitic copepods.</li> </ul> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-38"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <ul> <li> <p>Endoparasites live inside the host body at different sites (liver, kidney, lungs, red blood cells, etc.).</p> </li> <li> <p>Such as malarial parasites $P$. vivax, gut parasites, i.e., tapeworm.</p> </li> <li> <p>Their morphological and anatomical features of endoparasites are greatly simplified while emphasising their reproductive potential.</p> </li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-39"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> What is brood parasitism?</p> <ul> <li>Explain with the help of an example.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-40"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> Brood parasitism is the phenomenon in which an organism (parasite) lays eggs on the nest of other organism (host).</p> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryvery-short-answers-type-questionsprimary-41"><Primary>Very Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <ul> <li>E.g., Cuckoo (koel) bird lays its eggs in the nest of its host and lets the host incubate them.</li> <li>The eggs of the parasitic bird resemble the host’s egg in size and colour to reduce the chances of the host bird detecting the foreign eggs and ejecting them from the nest.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ <span style="color:blue">Very short answer type questions</span> $\rightarrow$ Short answer type questions $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryshort-answers-type-questionsprimary"><Primary>Short Answers Type Questions</Primary></h4> </div>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryshort-answers-type-questionsprimary-1"><Primary>Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> Why are coral reefs not found in the regions from West Bengal to Andhra Pradesh but are found in Tamil Nadu and on the east coast of India?</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryshort-answers-type-questionsprimary-2"><Primary>Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> Coral reefs are found in zone with high salt concentration (salinity), optimal temperature and with a less siltation condition which fairly facilitate to colonise corals.</p> <ul> <li>In case of high siltation and water flow, coral reef do not colonise.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryshort-answers-type-questionsprimary-3"><Primary>Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> If a freshwater fish is placed in an aquarium containing sea water, will the fish be able to survive?</p> <ul> <li>Explain giving reasons.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryshort-answers-type-questionsprimary-4"><Primary>Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> No, a freshwater fish placed in the aquarium containing sea water, will not be able to survive.</p> <ul> <li>Because, its body system is adapted to function normally in a narrow range of salinity and it cannot survive in the high salinity of sea water.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryshort-answers-type-questionsprimary-5"><Primary>Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ques.</strong> Why do all the freshwater organisms have contractile vacuoles whereas majority of marine organisms lack them?</p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryshort-answers-type-questionsprimary-6"><Primary>Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <p><strong>Ans.</strong> Contractile vacuole helps in osmoregulation.</p> <ul> <li>Because of the cellular environment of a freshwater organism being hypertonic, the water diffuses inside the cell constantly and gets collected in the contractile vacuole, which squeezes the extra water out of the cell periodically.</li> </ul> <p><Success>Ans. to be continued</Success></p> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>

<div style='text-align : center'> <Success><font size="5"><b>Organisms and Populations</b></font></Success> </div> <h4 id="primaryshort-answers-type-questionsprimary-7"><Primary>Short Answers Type Questions</Primary></h4> <hr> <div class="text-container"> <ul> <li>Thus, keeping the internal environment constant.</li> <li>While in case of marine organisms, this does not occur due to high salinity, therefore no need of contractile vacuole.</li> </ul> </font> </div> <hr> <font size ="4"> <div style='text-align : center'> Multiple choice questions (MCQs) $\rightarrow$ Very short answer type questions $\rightarrow$ <span style="color:blue">Short answer type questions</span> $\rightarrow$ Long answer type questions </div> </font>