Coleoptile is

Options

A. part of embryo axis between plumule and point of attachment of cotyledons
B. part of embryo axis between radicle and point of attachment of cotyledons
C. covering / sheaths around plumule in monocotyledonous seed
D. covering around radicle in dicotyledonous seed

Answer

**Step-by-Step Solution:**

1. **Understanding the Term "Coleoptile":**
- Coleoptile is a structure found in monocotyledonous plants (monocots). It is a protective sheath that covers the emerging shoot (plumule) of the seedling as it grows.

2. **Analyzing the Options:**
- The question provides four options regarding what coleoptile is:
1. Part of embryo axis between plumule and point of attachment of cotyledons.
2. Part of embryo axis between radical and point of attachment of cotyledons.
3. Covering sheath around plumule in monocotyledonous seed.
4. Covering around radical in dicotyledonous seed.

3. **Evaluating Each Option:**
- **Option 1:** This describes the apicotyle, which is not correct for coleoptile.
- **Option 2:** This describes the hypocotyle, which is also incorrect for coleoptile.
- **Option 3:** This correctly identifies coleoptile as the covering sheath around the plumule in monocotyledonous seeds.
- **Option 4:** This refers to the covering around the radical in dicotyledonous seeds, which is incorrect.

4. **Conclusion:**
- The correct answer is that coleoptile is the "covering sheath around plumule in monocotyledonous seed."

**Final Answer:**
Coleoptile is the covering sheath around the plumule in monocotyledonous seeds.

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