The structure coleorhiza in a maize grain is the covering with -

Options

A. Endosperm
B. Plumule
C. Coleorhiza
D. Radical

Answer

To answer the question about the structure coleorhiza in a maize grain, we can break down the information as follows:

### Step-by-Step Solution:

1. **Understanding Coleorhiza**: The coleorhiza is a protective sheath that covers the radicle (the embryonic root) of a seed, specifically in monocots like maize.

2. **Identifying Its Location**: In a maize grain, the coleorhiza is located at the lower end of the seed. It is the structure that encases the radicle as it emerges during germination.

3. **Differentiating from Other Structures**: While the coleorhiza covers the radicle, it is important to note that the entire seed is also covered by a seed coat, which protects the seed from environmental factors.

4. **Function of Coleorhiza**: The primary function of the coleorhiza is to protect the radicle as it grows and penetrates the soil during germination.

5. **Conclusion**: Thus, the coleorhiza in a maize grain is the covering that protects the radicle.

### Final Answer:
The structure coleorhiza in a maize grain is the covering of the radicle.

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