Which of the following statement proves Pinus to be gymnosperm?

Options

A. Production of seed by it
B. It is anemophilous
C. It is a large tree
D. It has exposed naked ovule

Answer

To determine which statement proves that Pinus is a gymnosperm, we can analyze the characteristics of gymnosperms and how they apply to Pinus. Here’s a step-by-step breakdown:

### Step-by-Step Solution:

1. **Understanding Gymnosperms**:
- Gymnosperms are a group of seed-producing plants that do not form flowers or fruits. The term "gymnosperm" means "naked seeds," indicating that their seeds are not enclosed by an ovary.

2. **Evaluating the Statements**:
- **Statement 1**: "Production of seed by it."
- This statement is incorrect as both gymnosperms and angiosperms produce seeds. Therefore, this does not uniquely identify Pinus as a gymnosperm.

- **Statement 2**: "It is anemophilous."
- Anemophilous refers to plants that are pollinated by wind. While many gymnosperms are anemophilous, this characteristic is not exclusive to gymnosperms, as some angiosperms also exhibit wind pollination. Thus, this statement does not definitively prove Pinus is a gymnosperm.

- **Statement 3**: "It is a large tree."
- The size of the tree does not provide any information about whether it is a gymnosperm or not. Both gymnosperms and angiosperms can be large trees. Hence, this statement is not relevant.

- **Statement 4**: "It has exposed, naked ovule."
- This statement is correct. Gymnosperms are characterized by having ovules that are not enclosed by an ovary wall, making them "naked." This is a definitive feature of gymnosperms, including Pinus.

3. **Conclusion**:
- The statement that proves Pinus to be a gymnosperm is: "It has exposed, naked ovule."

### Final Answer:
The correct statement that proves Pinus to be a gymnosperm is: **"It has exposed, naked ovule."**

---