Number of nuclei participating in double fertilisation is?a)2b)5c)4d)3Correct answer is 'B'. Can you explain this answer?

Question

Answer

The two polar nuclei, 2 male gamates nuclei and an egg cell nucleus participates in double fertilization.thus, op B.

Answer

Yes correct ans. is 5 👇👇👇👇👇In double fertilisation there are two haploid. male gametes,,, one haploid egg and 1 diploid secondary nucleus. each male gamete & egg has one nuclei,,, means total = 3 & as secondary nucleus is formed by fusion of two haploid cells it has two nuclei. means total 3+2 = 5✌✌✌✌👍👍

Answer

Double fertilisation is a unique process that occurs only in angiosperms, where two male gametes fuse with two different female gametes to form two different structures: the zygote and the endosperm. The number of nuclei participating in double fertilisation is 5.

Explanation:
During double fertilisation, the two male gametes, carried by the pollen tube, enter the embryo sac, which contains two female gametes: the egg cell and the central cell. The sperm cell fuses with the egg cell to form a zygote, while the other sperm cell fuses with the two polar nuclei of the central cell to form the endosperm.

The process of double fertilisation involves the following steps:

1. Pollination: Pollen grains are transferred from the anther to the stigma of the flower.

2. Germination: The pollen grains germinate on the stigma, and a pollen tube grows down through the style towards the ovary.

3. Entry: The pollen tube enters the ovule through the micropyle and reaches the embryo sac.

4. Fertilisation: The two male gametes are released from the pollen tube and fuse with the two female gametes in the embryo sac.

5. Zygote formation: One male gamete fuses with the egg cell to form a zygote, which develops into an embryo.

6. Endosperm formation: The other male gamete fuses with the two polar nuclei of the central cell to form the endosperm, which provides nutrients to the developing embryo.

Therefore, the number of nuclei participating in double fertilisation is five: two male gametes and three female gametes (egg cell, two polar nuclei).

Answer

Two polar nuclei, nucleus of egg, nucleus of two male gametes. here in this question they commonly asked the number of nuclei participating in the fertilisation. ok??

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