The heterophyllous development due to environment is shown by:

Options

A. Cotton
B. Buttercup
C. Coriander
D. All of these

Answer

To solve the question regarding which plant exhibits heterophyllous development due to environmental factors, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Heterophylly**:
- Heterophylly refers to the phenomenon where a single plant produces different types of leaves (morphological variations) depending on environmental conditions. This can occur in response to factors such as water availability, light, and temperature.

2. **Analyze the Options**:
- We have four options:
- A) Cotton
- B) Buttercup
- C) Coriander
- D) All of these
- We need to evaluate each option to determine if they exhibit heterophylly.

3. **Evaluate Each Plant**:
- **Cotton**: Cotton plants generally do not show significant variations in leaf shape based on environmental conditions. They typically have a consistent leaf structure.
- **Buttercup**: Buttercup (Ranunculus) is known for its heterophyllous nature. It produces different leaf shapes depending on whether the plant is submerged in water or growing in air. This is a clear example of heterophylly.
- **Coriander**: Coriander (Coriandrum sativum) usually has a consistent leaf structure and does not exhibit significant changes based on environmental conditions.
- **All of these**: This option implies that all the listed plants show heterophylly, which is not accurate based on our analysis.

4. **Conclusion**:
- Based on the evaluation, the only plant that shows heterophyllous development due to environmental factors is the Buttercup. Therefore, the correct answer is **B) Buttercup**.

### Final Answer:
The heterophyllous development due to the environment is shown by **B) Buttercup**.

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