Question

A) why is fertilization in an angiosperm referred to as double fertilization? Mention the ploidy of the cells involved.

Answer 1

Explanation:

because after entering of two male gametes into embryo through fillliform apparatus of synergids one of the male gamete fuses with egg cell and develops into zygote it is known as double fertilisiation and another one of the male gamete moves towards the central cell i.e polar nucleii and develops into primary endosperm nucleus that latter develops into endosperm it is known as triple fussion ,so ouccurance of two events it is known as double fertilisisation .

☆ ploidy of the cells involved in these event are

1. egg cell = n

2. polar nucleii = n

3. central cell = 2n

4. male gamets = n .