Which of the following statement about pollent is correct?

Options

A. Sporopollenin is responsible for fossilization of pollens
B. Pollen consumption has been claimed to increase the performance of athletes and race horses.
C. Pollen grains are not rich in nutrients
D. More than one option is correct

Answer

To solve the question regarding the composition of the entine of pollen grains, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Pollen Grains**:
- Pollen grains are microscopic structures that carry the male gametes (reproductive cells) in plants. They are essential for the process of fertilization.

2. **Structure of Pollen Grains**:
- Pollen grains consist of two main layers: the outer layer called the exine (or exospore) and the inner layer called the entine (or endospore).

3. **Composition of the Entine**:
- The entine is the inner layer of the pollen grain. According to botanical studies, the entine is primarily composed of cellulose and pectin.

4. **Analyzing the Options**:
- Let's evaluate the options provided in the question:
- a. Lipid and protein
- b. Cellulose and pectin
- c. Lignin and cutin
- d. Pectin and lignin
- Based on our understanding, the correct composition of the entine is option **b. cellulose and pectin**.

5. **Conclusion**:
- Therefore, the correct statement about the composition of the entine of pollen grains is that it is made up of cellulose and pectin.

### Final Answer:
The correct statement about the entine of pollen grains is: **b. cellulose and pectin**.

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