Question

How many time meiosis will take place for the formation of $80$ wheat grains

• A. $100$
• B. $80$
• C. $40$
• D. $99$

Answer 1

Answer: (A)

$100$

The correct answer is $\left(A\right)$.

Wheat is an angiosperm plant. In this plant $80$ grains (seeds) are produced by fertilization between $80$ male and $80$ female gametes. $80$ male gametes therefore, pollen grains are produced by $20$ meiosis in microspore mother cells while $80$ female gametes therefore, megaspores are formed by $80$ meiosis in megaspores mother cells because in angiosperm plants, after meiotic division in single megaspore mother cell, four megaspores are formed but only one megaspore is survived and other three get degenerated. Thus total meiotic divisions are $20+80=100$.

So, the correct option is '100'.