The nucellus which is persistant in seed in called

Options

A. Endosperm
B. Perisperm
C. Integument
D. Embryo

Answer

To answer the question, "The nucellus which is persistent in seed is called," we need to follow these steps:

### Step-by-Step Solution:

1. **Understand the Structure of the Ovule**:
- The ovule is a crucial part of the ovary in flowering plants. It contains several components, including the nucellus, integuments, and the embryo sac.

2. **Identify the Role of the Nucellus**:
- The nucellus is the central part of the ovule. It contains the megasporocyte, which is involved in the formation of the female gametes.

3. **Fertilization and Changes in the Ovule**:
- After fertilization, the ovule transforms into a seed, while the ovary develops into a fruit. The integuments of the ovule become the seed coat.

4. **Persistence of the Nucellus**:
- In some seeds, the nucellus remains present after fertilization, while in others, it may be shed.

5. **Different Terms Related to Nucellus**:
- The persistent nucellus in seeds can be referred to as perisperm. Endosperm is another structure that provides nourishment to the developing embryo but is not derived from the nucellus.

6. **Conclusion**:
- Therefore, the correct answer to the question is that the nucellus which is persistent in the seed is called **perisperm**.

### Final Answer:
The nucellus which is persistent in seed is called **perisperm**.

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