In most of the flowering plants pollination takes place at __________ celled stage

Options

A. 2
B. 3
C. 4
D. 5

Answer

**Step-by-Step Solution:**

1. **Understanding Pollination**: Pollination is the process of transferring pollen grains from the male part of a flower (anther) to the female part (stigma). This is a crucial step in the sexual reproduction of flowering plants.

2. **Development of Pollen Grains**: Pollen grains are formed from microspores. These microspores develop into pollen grains through a process called microsporogenesis.

3. **Cell Division**: The microspores undergo mitosis, which is a type of cell division. During this process, they form a two-cell stage.

4. **Two-Cell Stage**: In the two-cell stage, there are two types of cells:
- A larger vegetative cell.
- A smaller generative cell.

5. **Further Development**: The generative cell can undergo further mitosis to form the three-cell stage. In this stage, the generative cell divides to produce two male gametes, along with the vegetative cell.

6. **Pollination Occurrence**: It is noted that a significant portion of pollination (about 60% or more) occurs at the two-cell stage, while only about 40% occurs at the three-cell stage.

7. **Conclusion**: Therefore, the correct answer to the question is that in most flowering plants, pollination takes place at the two-cell stage.

**Final Answer**: In most of the flowering plants, pollination takes place at the **two-cell stage**.

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