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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
Describe the formation of helobial endosperm
Why does endosperm development preceeds that of zygote ?
Why does endosperm development precede embryo development in angiosperm seeds?
Identify the CORRECT statement/s from the following.
i. In post-fertilization changes within the ovule, the development of embryo is followed by the development of endosperm.
ii. Helobial endosperm is intermediate between cellular and nuclear type endosperm.
iii. Helobial endosperm is mostly observed in 72 families of dicots.
In angiosperms, triple fusion is required for the formation of ______.
If an angiospermic male plant is diploid and female plant tetraploid, the ploidy level of endosperm will be ______.
Indentify the wrong statement regarding post-fertilisation development.
Which of the following statements are true related to Seed X and Y?
 |
 |
| SEED X | SEED Y |
- Seed X is dicot and endospermic or albuminous.
- Seed X is dicot and non-endospermic or non-albuminous.
- Seed Y is a monocot and endospermic or albuminous.
- Seed Y is a monocot and non-endospermic or non-albuminous.
Choose the correct option with the respect to the nature of the seed.
The type of evolution where the central part is occupied by free nuclear and the peripheral part by cells is observed in ______.
In angiosperm, the haploid, diploid and triploid structures of a fertilized embryo sac sequentially are ______.
