Class 12th Biology 2014 Set1 Delhi Board Paper Solution
Question 9
Why do algae and fungi shift to sexual mode of reproduction just before the onset of adverse conditions?
Answer
Organisms such as fungi and algae switch to sexual mode of reproduction during adverse conditions because sexual reproduction brings variation into the individuals, some of which might help the individuals to adapt to the changed conditions and survive. This ensures the continuity of species.
Popular Questions of Class 12th biology
- Q:- What is spermatogenesis? Briefly describe the process of spermatogenesis.
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- Q:- Write a short note on
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(b) Adaptations of plants to water scarcity
(c) Behavioural adaptations in animals
(d) Importance of light to plants
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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.
Recently Viewed Questions of Class 12th biology
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Explain the following terms with example
(a) Co-dominance
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(a) Eutrophication
(b) Biological magnification
(c) Groundwater depletion and ways for its replenishment - Q:- Why is apple called a false fruit? Which part(s) of the flower forms the fruit?
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- Q:- Write a short note on
(a) Adaptations of desert plants and animals
(b) Adaptations of plants to water scarcity
(c) Behavioural adaptations in animals
(d) Importance of light to plants
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What is meant by monosporic development of female gametophyte?
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(a) bacteria are resistant to the toxin
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(c) toxin is inactive:
(d) bacteria encloses toxin in a special sac.