How many meiotic divisions are required to produce 10g grains of wheat?
Correct answer: D. 125
- A. 25
- B. 50
- C. 100
- D. 125
Explanation
100 wheat grains will develop from 100 zygotes.100 zygotes mean 100 pollen and 100 eggs are required. To produce 100 pollen, 25 meiotic divisions are required as one meiotic division of the pollen mother cell produces 4 pollen. To produce 100 eggs, 100 meiotic divisions are required as one meiotic division of megaspore mother cell produces one egg.So, total meiotic divisions required to produce 100 grains will be 100 + 25 =125
This question appeared on the HEC Phase II 2017 paper, which you can sit online with every answer explained.
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