Which of the following plastids are helpful in starch storage ?

Options

A. Chromoplast
B. Amyloplasts
C. Chloroplast
D. Proteoplast

Answer

To answer the question "Which of the following plastids are helpful in starch storage?" let's analyze the options provided: Chromoplast, Amyloplast, Chloroplast, and Proteoplast.

### Step-by-Step Solution:

1. **Understanding Plastids**:
- Plastids are organelles found in plant cells and some protists. They are involved in various functions including photosynthesis, storage, and pigment synthesis.

2. **Types of Plastids**:
- **Chloroplasts**: Contain chlorophyll and are primarily involved in photosynthesis.
- **Chromoplasts**: Contain carotenoid pigments and provide color to plants (yellow, orange, red).
- **Leucoplasts**: Colorless plastids that store nutrients. They can be further classified into different types based on what they store.

3. **Identifying Amyloplasts**:
- Among the leucoplasts, **Amyloplasts** are specifically known for storing starch. They convert glucose into starch and store it for later use.

4. **Evaluating Other Options**:
- **Proteoplasts**: These are involved in storing proteins, not starch.
- **Chloroplasts**: While essential for photosynthesis, they do not store starch.

5. **Conclusion**:
- The plastid that is specifically responsible for starch storage is the **Amyloplast**.

### Final Answer:
The plastid that is helpful in starch storage is the **Amyloplast**.

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