Pollen grains have spiny exine to aid in

Options

A. Entomophily
B. Anemophily
C. Ornithophily
D. Chiropterophily.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the role of spiny exine in pollen grains. We need to identify which type of pollination is aided by this feature.

2. **Identifying the Options**: The options provided are:
- A) Antimophilia
- B) Anemophilia
- C) Ornithophilia
- D) Chiropterophilia

3. **Defining Each Pollination Type**:
- **Antimophilia**: This refers to pollination by insects (entomophily).
- **Anemophilia**: This refers to pollination by wind.
- **Ornithophilia**: This refers to pollination by birds.
- **Chiropterophilia**: This refers to pollination by bats.

4. **Analyzing the Role of Spiny Exine**: The spiny exine of pollen grains is adapted to help in the attachment of pollen to the bodies of pollinators. In this case, the primary pollinators are insects.

5. **Conclusion**: Since the spiny exine aids in the attachment of pollen grains to insects, the correct answer is **Antimophilia** (option A).

**Final Answer**: The spiny exine of pollen grains aids in **Antimophilia** (pollination by insects).

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