Short Answer TypeState what is apomixis. Comment on its significance. How can it be commercially used?
Apomixis is a form of asexual reproduction in which seeds are formed without fertilisation. It is a form of asexual reproduction that mimics sexual reproduction.
Significance:
Apomixis allows certain species of plants belonging to Asteraceae, and grasses to produce seeds which do not produce seeds by the process of fertilisation.
Long Answer Type(a) Explain the different ways apomictic seeds can develop. Give an example of each.
(b) Mention one advantage of apomictic seeds to farmers.
(c) Draw a labelled mature stage of a dicotyledonous embryo.Short Answer TypeOut of many papaya plants growing in your garden, only a few bear fruits. Give reason.
Long Answer Type(a) Explain the post-pollination events leading to seed production in angiosperms.
(b) List the different types of pollination depending upon the source of pollen grains.
Short Answer TypeA. Draw a labelled diagram of L.S. of an embryo of grass (any six labels).
B, Give reason for each of the following:
(i) Anthers of angiosperm flowers are described as dithecous.
(ii) Hybrid seeds have to be produced year after year.
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