The plumule and radicle are enclosed in sheath which are (a)_______ and (b)_____ respectively

Answer

To answer the question regarding the sheaths enclosing the plumule and radicle, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Terms**:
- The **plumule** is the part of the seed embryo that develops into the shoot system of the plant.
- The **radicle** is the part of the seed embryo that develops into the root system.

2. **Identifying the Sheaths**:
- The sheath that encloses the **plumule** is known as the **coleoptile**. This structure protects the young shoot as it emerges from the soil.
- The sheath that encloses the **radicle** is known as the **coleorhiza**. This structure protects the young root as it grows downward.

3. **Final Answer**:
- Therefore, the answers to fill in the blanks are:
- (a) Coleoptile
- (b) Coleorhiza