Testa of a seed is produced from

Options

A. ovary wall
B. hilum
C. outer integument of ovule
D. funicle

Answer

To determine the origin of the testa of a seed, we can break down the information step by step:

### Step-by-Step Solution:

1. **Understanding Seed Structure**:
- A seed consists of various parts, including the seed coat, which is made up of two layers: the testa and the tegmen.

2. **Identifying the Components**:
- The seed coat is derived from the integuments of the ovule. The ovule has two integuments: the outer integument and the inner integument.

3. **Role of the Integuments**:
- After fertilization, the outer integument develops into the testa (the outer seed coat), while the inner integument develops into the tegmen (the inner seed coat).

4. **Evaluating the Options**:
- **Ovary Wall**: This develops into the pericarp of the fruit, not the testa. Therefore, this option is incorrect.
- **Hyalum**: This is a part of the seed that remains as a whole and does not develop into the testa. Hence, this option is also incorrect.
- **Outer Integument of Ovule**: This is the correct answer as it develops into the testa.
- **Funicle**: This is the stalk of the ovule and does not contribute to the seed coat. Thus, this option is incorrect.

5. **Conclusion**:
- The testa of a seed is produced from the **outer integument of the ovule**.

### Final Answer:
The correct answer is: **Outer integument of ovule**.

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