Etiolation occurs when plants

Options

A. Are grwon in dark
B. Are grown in intense light
C. Develop viral infection
D. Develop mineral deficiency.

Answer

**Step-by-Step Solution:**

1. **Understanding Etiolation**: Begin by defining etiolation. Etiolation is a physiological response in plants that occurs when they are grown in the absence of light or in very low light conditions.

2. **Identifying Conditions**: Recognize that etiolation is specifically associated with the lack of light. This means that the plants are either in complete darkness or in very dim light.

3. **Characteristics of Etiolated Plants**: Note the key characteristics of etiolated plants:
- They exhibit a yellowish color due to chlorosis (a lack of chlorophyll).
- The stems are elongated (long internodes) as the plant stretches towards the light source.
- The leaves are often smaller and also have a yellowish appearance.

4. **Analyzing the Options**: Now, evaluate the given options:
- **Option A**: Grown in dark - This aligns with the definition of etiolation.
- **Option B**: Grown in intense light - This is the opposite of etiolation.
- **Option C**: Develop viral infection - This is unrelated to etiolation.
- **Option D**: Develop mineral deficiency - While this can affect plant health, it does not specifically define etiolation.

5. **Conclusion**: Based on the understanding of etiolation and the evaluation of the options, the correct answer is that etiolation occurs when plants are grown in the dark.

**Final Answer**: Etiolation occurs when plants are grown in dark.

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