They portion of the embryonal axis above the level of attachment of scutellum is

Options

A. Hypocotyl
B. Epicotyl
C. Radical
D. Coleorhiza

Answer

To solve the question regarding the portion of the embryonal axis above the level of attachment of the scutellum, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Scutellum**:
- The scutellum is a modified cotyledon (seed leaf) found in grasses. It does not develop into a green structure but serves to digest endosperm and transfer nutrients to the embryo.

2. **Identify the Embryonal Axis**:
- The embryonal axis consists of different parts: the radical (which develops into the root), the hypocotyl, the epicotyl, and the cotyledonary node.

3. **Define the Hypocotyl**:
- The hypocotyl is the portion of the embryonal axis located between the radical (root) and the cotyledonary node. Since it is below the level of attachment of the scutellum, it cannot be the correct answer.

4. **Define the Epicotyl**:
- The epicotyl is the portion of the embryonal axis that is located above the cotyledonary node and below the plumule (the shoot). This means it is above the level of attachment of the scutellum, making it a potential correct answer.

5. **Eliminate Other Options**:
- The radical is the embryonic root, which is below the level of attachment of the scutellum, so it is incorrect.
- The coleoptile is a protective sheath covering the emerging shoot in grasses, also below the level of attachment of the scutellum, hence incorrect.

6. **Conclusion**:
- Based on the definitions and positions of the parts of the embryonal axis, the portion above the level of attachment of the scutellum is the **epicotyl**.

### Final Answer:
The portion of the embryonal axis above the level of attachment of the scutellum is the **epicotyl**.

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