cx-organisms-and-populations-Slides-Full-edited

<h4 id="success-stylefloatcentertext-aligncenterfont-size28pxborganisms-and-populationsbsuccess-112"><Success style="float:center;text-align:center;font-size:28px;"><b>ORGANISMS AND POPULATIONS</b></Success></h4>
<h4 id="primary-stylefloatcentertext-aligncenterfont-size24px-bshort-answer-type-questions-b-primary-34"><Primary style="float:center;text-align:center;font-size:24px;"> <b>SHORT ANSWER TYPE QUESTIONS </b> </Primary></h4>
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<p><strong>Question :</strong> Fill in the blanks</p>
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<th style="text-align:center">Species A</th>
<th style="text-align:center">Species B</th>
<th style="text-align:center">Type of Interaction</th>
<th style="text-align:center">Example</th>
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<td style="text-align:center">+</td>
<td style="text-align:center">-</td>
<td style="text-align:center"><em><strong>B</strong></em></td>
<td style="text-align:center"><em><strong>D</strong></em></td>
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<tr>
<td style="text-align:center">+</td>
<td style="text-align:center">+</td>
<td style="text-align:center"><em><strong>C</strong></em></td>
<td style="text-align:center"><em><strong>E</strong></em></td>
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<td style="text-align:center">+</td>
<td style="text-align:center"><strong>A</strong></td>
<td style="text-align:center">Commensalism</td>
<td style="text-align:center"><strong>F</strong></td>
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<h4 id="success-stylefloatcentertext-aligncenterfont-size28pxborganisms-and-populationsbsuccess-114"><Success style="float:center;text-align:center;font-size:28px;"><b>ORGANISMS AND POPULATIONS</b></Success></h4>
<h4 id="primary-stylefloatcentertext-aligncenterfont-size24px-bshort-answer-type-questions-b-primary-36"><Primary style="float:center;text-align:center;font-size:24px;"> <b>SHORT ANSWER TYPE QUESTIONS </b> </Primary></h4>
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<p><strong>Question :</strong> Observe the set of 4 figures $A, B, C$ and $D$ and, answer the following questions</p>
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<th>Fig. (A)</th>
<th><img src="https://cdn.mathpix.com/cropped/2024_01_30_21108c308f4c7978476cg-094.jpg?height=443&width=507&top_left_y=2022&top_left_x=676" width="80px"></th>
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<td>Fig. (B)</td>
<td><img src="https://cdn.mathpix.com/cropped/2024_01_30_21108c308f4c7978476cg-094.jpg?height=431&width=587&top_left_y=2022&top_left_x=1326" width="80px"></td>
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<h4 id="success-stylefloatcentertext-aligncenterfont-size28pxborganisms-and-populationsbsuccess-121"><Success style="float:center;text-align:center;font-size:28px;"><b>ORGANISMS AND POPULATIONS</b></Success></h4>
<h4 id="primary-stylefloatcentertext-aligncenterfont-size24px-blong-answer-questionsb-primary-3"><Primary style="float:center;text-align:center;font-size:24px;"> <b>LONG ANSWER QUESTIONS</b> </Primary></h4>
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<p><strong>Solution :</strong></p>
<p>A) A population has birth rate (natality) and death rate (mortality) whereas an individual has birth and death.</p>
<p>B) Population density: The density is referred to as the individual per unit area and density changes with space and time</p>
<p>C) Population Growth: It is the growth rate seen in a population over time.</p>
<p>D) Natality: It is the rate of reproduction or birth rate per unit time.</p>
<p>E) Mortality: It is the rate of deaths per unit time. Increased mortality shows a decline in population.</p>
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<h4 id="success-stylefloatcentertext-aligncenterfont-size28pxborganisms-and-populationsbsuccess-126"><Success style="float:center;text-align:center;font-size:28px;"><b>ORGANISMS AND POPULATIONS</b></Success></h4>
<h4 id="primary-stylefloatcentertext-aligncenterfont-size24px-blong-answer-questionsb-primary-8"><Primary style="float:center;text-align:center;font-size:24px;"> <b>LONG ANSWER QUESTIONS</b> </Primary></h4>
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<p><strong>Solution :</strong></p>
<p>The above graph shows a population growing in a habitat having limited resources. The graph shows an initial lag phase. After that, an increase in population takes place, known as acceleration, following which deceleration takes place and at last, asymptote occurs. A sigmoid curve plot is formed when the population reaches carrying capacity. This is called Verhulst-Pearl logistic growth. This is represented by an equation: dN/dT=rN(K-N/K)</p>
<p>dN/dT=rN(1-N/K)</p>
<p>Here, (1-N/K) is environmental resistance.</p>
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<h4 id="success-stylefloatcentertext-aligncenterfont-size28pxborganisms-and-populationsbsuccess-137"><Success style="float:center;text-align:center;font-size:28px;"><b>ORGANISMS AND POPULATIONS</b></Success></h4>
<h4 id="primary-stylefloatcentertext-aligncenterfont-size24px-blong-answer-questionsb-primary-19"><Primary style="float:center;text-align:center;font-size:24px;"> <b>LONG ANSWER QUESTIONS</b> </Primary></h4>
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<p><strong>Solution :</strong></p>
<p>Yes, regional and local variations exist within each biome. A biome is a large community in the world. The main biome of the world does not show the boundary of any country. Regional and local variations lead to the formation of a wide variety of habitats. On earth, life exists even in extreme and harsh habitats – scorching Rajasthan desert, perpetually rain-soaked Meghalaya forest, deep ocean trenches, torrential streams, permafrost Polar Regions, high mountain tops, boiling thermal springs and stinking compost pits, etc.</p>
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<h4 id="success-stylefloatcentertext-aligncenterfont-size28pxborganisms-and-populationsbsuccess-143"><Success style="float:center;text-align:center;font-size:28px;"><b>ORGANISMS AND POPULATIONS</b></Success></h4>
<h4 id="primary-stylefloatcentertext-aligncenterfont-size24px-blong-answer-questionsb-primary-25"><Primary style="float:center;text-align:center;font-size:24px;"> <b>LONG ANSWER QUESTIONS</b> </Primary></h4>
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<p><strong>Solution :</strong></p>
<p>i. Eurythermal plant species – Mango, red algae, acacia<br>
ii. A hot water spring organism – Thermus aquaticus, Archaebacteria<br>
iii. An organism seen in deep ocean trenches – Jelly fishes, Sea cucumbers<br>
iv. An organism seen in compost pit – Earthworm, fungi, bacteria<br>
v. A parasitic angiosperm – Cuscuta reflexa<br>
vi. A stenothermal plant species – Conifers, Cocosnucifera<br>
vii. Soil organism – Bacteria, Earthworm<br>
viii. A benthic animal – Crabs, sponges, Octopus<br>
ix. Antifreeze compound seen in antarctic fish – Salt content, antifreeze glycoproteins or AFGPs<br>
x. An organism which can conform – Frog</p>
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