Question

How does the male gamete reach the egg cell?

• A. The male gametes are directly transferred by pollinating agents to the egg cell in the ovule.
• B. The male gametes travel in the pollen tube, which reach the egg cell in the ovule.
• C. The male gametes come through the corolla and reach the egg cell in the ovule.
• D. All of these

Answer 1

The correct option is (A)

Explanation of correct option:

1. When the pollen grain germinates on the stigma of the female gametophyte, the pollen tube is formed.
2. Two male gametes travel vi that pollen the towards the ovule which has the egg cell. When the pollen tube grows and reaches the ovule, the male gametes are discharged in the embryo sac which holds the egg cell and the polar nuclei.
3. Thereafter one male gamete fuses with the egg cell and fertilization is complete.

Final answer:

The male gametes travel in the pollen tube, which reaches the egg cell in the ovule.