Which is correct for pneumatophores?
(i) Breathing roots
(ii) Roots of mangroves
(iii) Gives support to the plant
(iv) Facilitate aeration

Options

A. (i),(ii),(iii)
B. (i),(ii),(iv)
C. (ii),(iii),(iv)
D. All are true

Answer

**Step-by-Step Solution:**

1. **Understanding Pneumatophores:**
- Pneumatophores are specialized roots that are primarily found in mangrove plants. They are adapted to environments where the soil is waterlogged and oxygen levels are low.

2. **Identifying the Functions of Pneumatophores:**
- The main functions of pneumatophores include:
- **Breathing Roots:** They are often referred to as breathing roots because they help in gas exchange, allowing the plant to take in oxygen and release carbon dioxide.
- **Roots of Mangroves:** Pneumatophores are specifically associated with mangrove plants, which grow in saline environments.
- **Facilitating Aeration:** They help in aeration by protruding above the water level, enabling the exchange of gases with the atmosphere.

3. **Evaluating the Options:**
- (i) Breathing roots: **Correct** - Pneumatophores are indeed known as breathing roots.
- (ii) Roots of mangroves: **Correct** - They are specifically found in mangrove plants.
- (iii) Gives support to the plant: **Incorrect** - While roots do provide support, pneumatophores are not primarily for this purpose; they are mainly for respiration.
- (iv) Facilitate aeration: **Correct** - Pneumatophores facilitate aeration by allowing gas exchange.

4. **Conclusion:**
- The correct options for pneumatophores are (i), (ii), and (iv). Therefore, the answer is that options 1, 2, and 4 are correct.

**Final Answer: Options 1, 2, and 4 are correct for pneumatophores.**

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