(A) In the embryo sac of angiosperms,two polar nuclei migrate to the center. These two nuclei fuse to form a single diploid $(2n)$ nucleus,which is kn

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(A) In the embryo sac of angiosperms,two polar nuclei migrate to the center. These two nuclei fuse to form a single diploid $(2n)$ nucleus,which is known as the secondary nucleus or definitive nucleus. Therefore,the secondary nucleus is diploid.

Class 12 Biology Sexual Reproduction in Flowering Plants The Pistil, Megasporangium (ovule) and Embryo sac

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The secondary nucleus in the middle of an embryo sac of angiosperms is:

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A
Diploid
B
Triploid
C
Tetraploid
D
Haploid

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Class 12

Biology Questions

Chapter

Sexual Reproduction in Flowering Plants

Subtopic

The Pistil, Megasporangium (ovule) and Embryo sac

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What is meant by monosporic development of the female gametophyte?

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$A$ - Four cells are at the chalazal end and are called the antipodals.
$R$ - $A$ typical angiosperm embryo sac,at maturity,though $8$-nucleate is $7$-celled.

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If the endosperm mother cell of an angiosperm plant has $24$ chromosomes,the number of chromosomes in the $MMC$ will be:

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What are the respective numbers of antipodal cells,central cell,egg cell,and synergids in an embryo sac?

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In the given figure,the labeled part $X$ is formed by:

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The secondary nucleus in the middle of an embryo sac of angiosperms is:

Similar Questions

What is meant by monosporic development of the female gametophyte?

$A$ - Four cells are at the chalazal end and are called the antipodals.$R$ - $A$ typical angiosperm embryo sac,at maturity,though $8$-nucleate is $7$-celled.

If the endosperm mother cell of an angiosperm plant has $24$ chromosomes,the number of chromosomes in the $MMC$ will be:

What are the respective numbers of antipodal cells,central cell,egg cell,and synergids in an embryo sac?

In the given figure,the labeled part $X$ is formed by:

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$A$ - Four cells are at the chalazal end and are called the antipodals.
$R$ - $A$ typical angiosperm embryo sac,at maturity,though $8$-nucleate is $7$-celled.