Question

The number of meiotic divisions required for forming 100 zygotes for 100 grains of wheat is

• A. 100
• B. 75
• C. 125
• D. 50

Answer 1

The correct option is C

125

For formation of 100 zygotes, 100 male gametes and 100 female gametes (eggs) are required. 100 male gametes are developed from 100 microspores (from 25 meiotic divisions) and 100 eggs are developed from 100 megaspores (from 100 meiotic division).

Hence, number of meiotic division necessary for formation of 100 zygotes = 25 + 100 = 125.