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प्रश्न
Describe the development of endosperm after double fertilisation in an angiosperm.
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उत्तर
Development of Endosperm
- The primary endosperm nucleus repeatedly divides to give rise to free nuclei. This stage of development is called free nuclear endosperm.
- Cell wall formation occurs next, resulting in a cellular endosperm.
- The endosperm may either be fully consumed by the growing embryo (as in pea and beans) or retained in the mature seed (as in coconut and castor).
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संबंधित प्रश्न
A non biology person is quite shocked to know that apple is a false fruit, mango is a true fruit and banana is a seedless fruit. As a biology student how would you satisfy this person?
Draw a labelled mature stage of a dicotyledonous embryo.
Describe the formation of helobial endosperm
Why does endosperm development preceeds that of zygote ?
Identify the characteristic feature/s of helobial endosperm.
At what stage of endosperm development, will you observe nuclear or cellular type of endosperm?
In dicots, the pollen grains are usually ______
Double fertilization leading to initiation of endosperm in angiosperms require ______.
The type of evolution where the central part is occupied by free nuclear and the peripheral part by cells is observed in ______.
The diagram given below shows the three types of endosperms in angiosperms.
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 |
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| Type 1 | Type 2 | Type 3 |
- Identify the three types of endosperms shown above.
- Name the type of endosperm which commonly occurs in polypetalous dicots.
