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Which one of the following statements is wrong?

1. When pollen is shed at two-celled stage, double fertilization does not take place.
2. Vegetative cell is larger than generative cell.
3. Pollen grains in some plants remain viable for months.
4. Intine is made up of cellulose and pectin.

Correct answer: When pollen is shed at two-celled stage, double fertilization does not take place.

Solution

The wrong statement is A. Pollen shed at the two-celled stage can still complete the formation of the male gametes after pollination, so double fertilization can occur. The other statements are correct facts about pollen structure and viability.

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