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Reproduction Reproductionin Organisms L-1
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Reproduction in organism
![image](/subject-images/iitpal/image/biology-class-12-unit-02-chapter-01-reproduction-reproductionin-organisms-l-1_4-st6fylo6zx4-008-0022.8.jpg)
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Reproduction Reproductionin Organisms L-1
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Life Span of Different Organisms
|S. No| Organsims | Life - Span | | -- | -------- | -------- | | 1 | Micro-organsims | Minutes to hrs | | 2 | Mayfly | 1 day | | 3 | Wheat | 4-6 Months | | 4 | Rat | 5 Years | | 5 | Rabbit | 10-15 years | | 6 | Whale | 35-40 years | | 7 | Elephant | 65 years |
![image](/subject-images/iitpal/image/biology-class-12-unit-02-chapter-01-reproduction-reproductionin-organisms-l-1_4-st6fylo6zx4-011-0256.8.jpg)
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Reproduction Reproductionin Organisms L-1
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Life Span of Different Organisms
|S. No| Organsims | Life - Span | | -- | -------- | -------- | | 8 | Man | 100 years | | 9 | Parrot | 140 years | | 10 | Tortoise | 200 years | | 11 | Banyan Tree | 200 years | | 12 | Peepal | 2000-3000 years| | 13 | Red-wood Tree | 3000-4000 years| | 14 | _Larrea Tridentata_| 11500 years |
![image](/subject-images/iitpal/image/biology-class-12-unit-02-chapter-01-reproduction-reproductionin-organisms-l-1_4-st6fylo6zx4-011-0256.8.jpg)
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Reproduction Reproductionin Organisms L-1
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Life-span - 4 Stages
- 1. Juvenility - Birth + Adult - 2. Maturity - Adult - 3. Senescence and Aging - Health declines - 4. Death - Final Stage
![image](/subject-images/iitpal/image/biology-class-12-unit-02-chapter-01-reproduction-reproductionin-organisms-l-1_4-st6fylo6zx4-3.jpg)
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Reproduction Reproductionin Organisms L-1
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Four Phases
- 1. Lag Phase- Bacteria adjust themself to the environment - 2. Lag Phase - Growth Phase - 3. Stationery Phase - Remain constant - 4. Death
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Reproduction Reproductionin Organisms L-1
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Algee or plant
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Reproduction Reproductionin Organisms L-1
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Fungi
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Reproduction Reproductionin Organisms L-1
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Butterfly or concept of metamorphosis
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Reproduction Reproductionin Organisms L-1
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Vertebrate
- Egg and Sperm - Baby - Child - Adult - Adolescent/ young person
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Reproduction Reproductionin Organisms L-1
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Types of Reproduction
- Asexual (Regeneration of somatic tissue) - Artificial (Micropropagation plant tissue culture ) - Sexual Reproduction (Male and female gametes are produced) - Natural - Artificial (Test tube babies)
![image](/subject-images/iitpal/image/biology-class-12-unit-02-chapter-01-reproduction-reproductionin-organisms-l-1_4-st6fylo6zx4-h.png)
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Reproduction Reproductionin Organisms L-1
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Difference between asexual and sexual reproduction
| Asexual | Sexual | | | -------- | -------- | -------- | | Single individual | Two individual | | No gametes | Male and female gametes | | No change in ploidy(n) | Change in ploidy | | 2n$\rightarrow$2n | Well developed sex organs(male and female sex organs) | | n$\rightarrow$n | 2n$\rightarrow$n | | No recombination | Recombination or exchange of genetic material | | Quick and easy | Complex and time consuming |
![image](/subject-images/iitpal/image/biology-class-12-unit-02-chapter-01-reproduction-reproductionin-organisms-l-1_4-st6fylo6zx4-037-3240.0.jpg)
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Reproduction Reproductionin Organisms L-1
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Types of reproduction
- **Asexual reproduction** - Natural - Budding - Fission - Artificial - Micropropagation - Crafting - **Sexual reproduction** - 1. Pre-fertilization events - 2. Fertilization events - 3. Post-fertilization events
![image](/subject-images/iitpal/image/biology-class-12-unit-02-chapter-01-reproduction-reproductionin-organisms-l-1_4-st6fylo6zx4-j.png)
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Reproduction Reproductionin Organisms L-1
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Thank you