Phenotypic variants formed in a population due to change in environment are called

Options

A. Ecophenes
B. ecotypes
C. sciophytes
D. heliophytes

Answer

To answer the question "Phenotypic variants formed in a population due to change in environment are called," we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Phenotypic Variants**:
- Phenotypic variants refer to the observable traits or characteristics of organisms that can change due to environmental influences.

2. **Environmental Influence**:
- When the environment changes, organisms may undergo morphological (structural) and physiological (functional) changes to adapt to the new conditions.

3. **Adaptation Mechanism**:
- These changes are part of a process known as adaptation, where organisms develop new traits that help them survive in altered environments.

4. **Identifying the Term**:
- The specific term used to describe these phenotypic changes in response to environmental changes is "Echophenes."

5. **Differentiating from Other Terms**:
- It is important to distinguish "Echophenes" from other terms:
- **Echotypes**: These refer to genetic variants that arise from genetic changes rather than direct phenotypic adaptations.
- **Scyophytes**: These are plants that thrive in low light conditions, not a term for phenotypic variants.
- **Heliophytes**: These are plants that grow in full sunlight, also not related to the concept of phenotypic variants.

6. **Conclusion**:
- Therefore, the correct answer to the question is "Echophenes."

### Final Answer:
Phenotypic variants formed in a population due to change in environment are called **Echophenes**.

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