Class 12th Biology 2016 Set3 Outside Delhi Board Paper Solution
Question 14
How are Parthenocarpic fruits produced by some plants and apomictic seeds by some others ? Explain.
Answer
Ovary develops into fruit without fertilisation.
Formation of seeds without fertilisation / form without reductional divison / develop into embryo without fertilisation.
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(b) Adaptations of plants to water scarcity
(c) Behavioural adaptations in animals
(d) Importance of light to plants
(e) Effect of temperature or water scarcity and the adaptations of animals. - Q:- With a neat diagram explain the 7-celled, 8-nucleate nature of the female gametophyte.
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- Q:- With a neat, labelled diagram, describe the parts of a typical angiosperm ovule.
- Q:- Explain the Law of Dominance using a monohybrid cross.
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Practise drawing various animals and plants.
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(c) Senescent phase. - Q:- Suggest the aspects of reproductive health which need to be given special attention in the present scenario.
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