Correct statement regarding Mitochondria and Chloroplast
I) ATP synthesis is seen in both
II) Outer membrane has more surface in both
III) Circular naked DNA,RNA and 70 S ribosomes are seen in both
IV) Oxidative phosphorylation occurs in both

Options

A. I and II
B. II and III
C. I and III
D. I and IV

Answer

To determine the correct statements regarding mitochondria and chloroplasts, let's analyze each statement step by step:

### Step 1: Analyze Statement I
**Statement I: ATP synthesis is seen in both.**
- **Explanation:** This statement is correct. Mitochondria are responsible for ATP synthesis through cellular respiration, while chloroplasts synthesize ATP during photosynthesis. Both organelles play crucial roles in energy production in their respective processes.

### Step 2: Analyze Statement II
**Statement II: Outer membrane has more surface in both.**
- **Explanation:** This statement is incorrect. While both mitochondria and chloroplasts have outer membranes, the surface area is not necessarily "more" in both. The outer membrane of mitochondria is smooth, while chloroplasts have a more complex structure with thylakoids inside. Therefore, this statement does not hold true.

### Step 3: Analyze Statement III
**Statement III: Circular naked DNA, RNA, and 70S ribosomes are seen in both.**
- **Explanation:** This statement is correct. Both mitochondria and chloroplasts contain circular DNA (naked DNA), RNA, and 70S ribosomes. This is one of the reasons they are considered semi-autonomous organelles, as they can synthesize some of their own proteins independently of the nuclear DNA.

### Step 4: Analyze Statement IV
**Statement IV: Oxidative phosphorylation occurs in both.**
- **Explanation:** This statement is incorrect. Oxidative phosphorylation specifically occurs in mitochondria as part of cellular respiration. In chloroplasts, the process of ATP generation is different and involves photophosphorylation during photosynthesis. Therefore, this statement is not true for both organelles.

### Conclusion
Based on the analysis:
- **Correct Statements:** I and III
- **Incorrect Statements:** II and IV

### Final Answer
The correct statements regarding mitochondria and chloroplasts are:
- I) ATP synthesis is seen in both.
- III) Circular naked DNA, RNA, and 70S ribosomes are seen in both.