The matrix of both chloroplast and mitochondria are similar in having

Options

A. Circular DNA
B. 70s ribosomes
C. RNA
D. All

Answer

To answer the question regarding the similarities in the matrix of both chloroplasts and mitochondria, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Organelles**:
- Chloroplasts are found in plant cells and are responsible for photosynthesis.
- Mitochondria are present in both plant and animal cells and are known as the powerhouse of the cell, producing energy through respiration.

2. **Identifying the Matrix**:
- The matrix refers to the inner space of these organelles where various biochemical processes occur.

3. **Comparing the Components**:
- Both chloroplasts and mitochondria have their own DNA, which is circular in structure, similar to prokaryotic DNA.
- They both contain 70S ribosomes, which are smaller than the 80S ribosomes found in the cytoplasm of eukaryotic cells.
- Both organelles also have RNA, which is essential for protein synthesis.

4. **Evaluating the Options**:
- Option A: Circular DNA - Present in both chloroplasts and mitochondria.
- Option B: 70S Ribosomes - Present in both organelles.
- Option C: RNA - Present in both chloroplasts and mitochondria.
- Since all options are correct, the answer is **Option D: All of the above**.

### Final Answer:
The matrix of both chloroplasts and mitochondria are similar in having circular DNA, 70S ribosomes, and RNA. Therefore, the correct answer is **Option D: All**.