Question

To produce 10 seeds how many meiosis will be needed and how many pollen grain will be wasted?

• A. 13 and 2
• B. 2 and 14
• C. 10 and 10
• D. None

Answer 1

Answer: (A)

No. of required meiosis $=n+\frac{n}{4}=\frac{5n}{4}$
where n = no. of seeds.
$=\frac{5\times 10}{4}=\frac{50}{4}=12.5=13$
10 Megaspore + 10 Microspore = 10 seeds
To produce 10 Megaspores, 10 meiotic division would be needed
13 - 10 = 3 meiosis will produce 12 microspore
So, wastage of pollen grain = 2