Which one of the following statements is wrong

Options

A. Pollen grains in some plants remain viable for months
B. lntine is made up of cellulose and pectin
C. When pollen is shed at two - celled state. double fertilization does not take place
D. Vegetative cell is larger than generative cell

Answer

To determine which statement is wrong regarding pollen grains and fertilization in flowering plants, we will analyze each option provided.

### Step-by-Step Solution:

1. **Understanding the Statements**:
- We need to evaluate the following statements:
a. Pollen grains in some plants remain viable for months.
b. The inner layer of pollen grain is made up of cellulose and pectin.
c. When pollen is shed at the 2-cell stage, double fertilization does not take place.
d. The vegetative cell is larger than the generative cell.

2. **Evaluating Statement a**:
- Pollen grains in some plants can indeed remain viable for extended periods, often for months. This statement is true.

3. **Evaluating Statement b**:
- The inner layer of the pollen grain, known as the intine, is primarily composed of cellulose and pectin. This statement is also true.

4. **Evaluating Statement c**:
- The statement claims that when pollen is shed at the 2-cell stage, double fertilization does not take place. However, this is incorrect. In angiosperms (flowering plants), even when pollen is shed at the 2-cell stage, it can develop further on the stigma to form a 3-cell stage, which is capable of participating in double fertilization. Thus, this statement is wrong.

5. **Evaluating Statement d**:
- The vegetative cell is indeed larger than the generative cell in pollen grains. This statement is true.

6. **Conclusion**:
- The only incorrect statement among the options is that when pollen is shed at the 2-cell stage, double fertilization does not take place.

### Final Answer:
The wrong statement is: "When pollen is shed at the 2-cell stage, double fertilization does not take place."

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