Study of pollen grains is

Options

A. Palynology
B. Palaeontology
C. Palaeobotany
D. None of the above.

Answer

### Step-by-Step Solution

1. **Understanding Pollen Grains**:
- Pollen grains are the male gametes of flowering plants. They play a crucial role in the process of sexual reproduction in plants by facilitating the transfer of sperm cells.

2. **Identifying the Study of Pollen Grains**:
- The question asks for the term that describes the study of pollen grains.

3. **Exploring Related Terms**:
- The transcript mentions several related fields:
- **Paleobotany**: The study of fossilized plants.
- **Paleontology**: The study of fossils, including both plants and animals.
- **Palynology**: The specific study of pollen grains and spores.

4. **Selecting the Correct Term**:
- Based on the definitions provided, the correct term for the study of pollen grains is **Palynology**.

5. **Final Answer**:
- Therefore, the answer to the question "Study of pollen grains is" is **Palynology**.