Find the correct answers : Seeds have separate endosperm
(a) Maize (b) Onion (c) Rice (d) Bean

Options

A. a , b and c
B. a and b
C. b and d
D. a and c

Answer

To determine which seeds have a separate endosperm, we need to understand the classification of seeds based on their endosperm type. Here's a step-by-step solution:

### Step-by-Step Solution:

1. **Understanding Endosperm**:
- Seeds can be classified into two categories based on the presence and utilization of endosperm: endospermic (or albuminous) seeds and non-endospermic (or exalbuminous) seeds.
- Endospermic seeds retain their endosperm during the development of the embryo, while non-endospermic seeds utilize the endosperm completely.

2. **Identifying Seed Types**:
- **Maize**: This is a monocot seed that retains its endosperm after the embryo develops. Therefore, maize has a separate endosperm.
- **Onion**: Also a monocot, onions retain their endosperm as well, so they too have a separate endosperm.
- **Rice**: Like maize and onion, rice is a monocot and retains its endosperm, hence it has a separate endosperm.
- **Bean**: Beans are dicots, which means they typically do not retain a separate endosperm after the embryo develops. The endosperm is utilized during the growth of the embryo.

3. **Conclusion**:
- The seeds that have a separate endosperm are maize, onion, and rice. The bean does not have a separate endosperm.

### Final Answer:
The correct options are:
- (a) Maize
- (b) Onion
- (c) Rice