Bending of shoot tip in the absence of light is

Options

A. Chlorosis
B. Emasculation
C. Etiolation
D. Tanning.

Answer

**Step-by-Step Solution:**

1. **Understanding the Question:**
The question asks about the phenomenon that occurs when the shoot tip bends in the absence of light.

2. **Analyzing the Options:**
We have four options to consider:
- **Chlorosis:** This refers to the yellowing of leaves due to a lack of chlorophyll, but it does not involve bending of the shoot tip. Therefore, this option is incorrect.
- **Emasculation:** This is the removal of stamens from flowers to prevent self-pollination. It does not relate to the bending of the shoot tip, making this option incorrect as well.
- **Etiolation:** This is a process observed in plants that grow in the absence of light. It is characterized by elongated stems, small and yellow leaves, and importantly, bending of the shoot tip. This option is likely correct.
- **Tanning:** This process involves the binding of collagen in hides and does not relate to plant growth or bending of the shoot tip, making this option incorrect.

3. **Identifying the Correct Answer:**
After analyzing all the options, the only process that involves the bending of the shoot tip in the absence of light is **etiolation**. Thus, the correct answer is option 3: **etiolation**.

4. **Conclusion:**
The bending of the shoot tip in the absence of light is known as **etiolation**.

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