Question

If the number of chromosome in the pollen grains of ficus is 12, what would be the number of chromosome in its endosperm?

Answer 1

as this plant is a angiosperm the number of chromosome in endosperme is 3n means 36 chromosome

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Answer 2

The number of chromosomes in the endosperm of the ficus would be 36.

EXPLANATION:

• In the division Angiosperm, endosperm is three nucleated structures, that is number of nuclei is 3N in it. It is because of the fact that ovule in angiosperms is 7 celled 8 nucleated in structure.
• It consists of polar nuclei, antipodal cells, synergies, and the ovum. When pollen tube grows and reaches the ovule it releases 2 Male gametes, one is fused with the ovule to form zygote which is called fertilization.
• And, other male gametes are fused with the double celled structure present in the center to form PEN which is Primary Endospermic Nucleus which after fusion is 3 celled and which later forms the endosperm, it is called as "triple fusion".
• Since, number of chromosomes in pollen grain is 12, therefore to form the endosperm it becomes thrice and the number of endosperm in ficus will be 36.

To learn more about chromosome:

Write the number of chromosome body cell of honey bee workers and drones ​

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What will be the gametic chromosome number of a cell, if that organism has somatic cells with 40 chromosomes each ?

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