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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
Angiosperms bearing unisexual flowers are said to be either monoecious or dioecious. Explain with the help of one example each.
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?
Endosperm of angiosperm is __________.
(A) haploid
(B) diploid
(C) triploid
(D) tetraploid
In dicots, the pollen grains are usually ______
Indentify the wrong statement regarding post-fertilisation development.
If the endosperm cell of an angiosperm contains 24 chromosomes, the number of chromosomes in the root tip cells will be ______.
Mark the odd one.
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 diagram given below shows the three types of endosperms in angiosperms.
 |
 |
 |
| 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.
The number of chromosomes in the leaf cells of a male plant is 40 and in the stem cells of a female plant is 60. If they are artificially hybridised, what will be the number of chromosomes in the endosperm?
