Pollen dispersal occurs at two/three celled stage, further development of male gametophyte takes place

Options

A. In Air
B. In water
C. In Embryo-Sac
D. At stigma

Answer

**Step-by-Step Solution:**

1. **Understanding Pollen Dispersal**: Pollen dispersal occurs when pollen grains, which represent the male gametophyte, are transferred from the anther (the male part of the flower) to the stigma (the receptive part of the female flower). This process is crucial for fertilization in flowering plants (angiosperms).

2. **Pollen Grain Development**: Pollen grains are typically at a 2 or 3 celled stage when they are dispersed. This means that they contain the necessary cells for fertilization but are not fully developed male gametophytes.

3. **Landing on Stigma**: Once pollen grains are dispersed, they land on the stigma of a compatible flower. The stigma serves as the landing platform for pollen grains, where they can germinate.

4. **Germination and Pollen Tube Formation**: After landing on the stigma, the pollen grains germinate. This process leads to the formation of a pollen tube, which is essential for the delivery of male gametes to the female gametophyte.

5. **Entry into Embryo Sac**: The pollen tube grows down the style and enters the ovary, where it reaches the embryo sac. The embryo sac contains the female gametophyte, which includes the egg cell that will be fertilized.

6. **Conclusion**: Therefore, while pollen dispersal occurs at the 2 or 3 celled stage, the further development of the male gametophyte takes place on the stigma and within the embryo sac.

**Final Answer**: Pollen dispersal occurs at the 2 or 3 celled stage, and further development of the male gametophyte takes place on the stigma and inside the embryo sac.

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