Read the following statements and identify the correct option given
I. In prokaryotic cell, the nuclear membrane , chloroplasts, mitochondria , microtubules and different kinds of pili are absent ,
II. In eukaryotic cell, the nuclear membranes, chloroplasts, mitochondria and pili are present .
III. In prokaryotic cell, the ribosomes are of 70 'S' type and in mitochondria of eukaryotic animal cell, the ribosomes are of 80 'S' type

Options

A. I & III are wrong , III is correct
B. I is correct , II and III are wrong
C. I and II are correct, III is wrong
D. I,II and III are wrong

Answer

To solve the question, we need to analyze each of the three statements provided regarding prokaryotic and eukaryotic cells.

### Step-by-Step Solution:

1. **Analyze Statement I:**
- Statement I claims that in prokaryotic cells, the nuclear membrane, chloroplasts, mitochondria, microtubules, and different kinds of pili are absent.
- **Evaluation:**
- Prokaryotic cells do not have a nuclear membrane, chloroplasts, or mitochondria. However, pili are present in prokaryotic cells, especially in bacteria. Therefore, this statement is **incorrect**.

2. **Analyze Statement II:**
- Statement II states that in eukaryotic cells, the nuclear membranes, chloroplasts, mitochondria, and pili are present.
- **Evaluation:**
- Eukaryotic cells do have nuclear membranes, chloroplasts, and mitochondria. However, pili are typically absent in eukaryotic cells. Hence, this statement is also **incorrect**.

3. **Analyze Statement III:**
- Statement III mentions that in prokaryotic cells, the ribosomes are of 70 'S' type and in mitochondria of eukaryotic animal cells, the ribosomes are of 80 'S' type.
- **Evaluation:**
- This statement is **correct**. Prokaryotic ribosomes are indeed of the 70 'S' type, and the ribosomes found in mitochondria (which are similar to prokaryotic ribosomes) are of the 70 'S' type, while eukaryotic ribosomes are of the 80 'S' type.

4. **Conclusion:**
- Based on the evaluations:
- Statement I: Incorrect
- Statement II: Incorrect
- Statement III: Correct
- Therefore, the correct option is that **all statements I and II are incorrect, and only statement III is correct**.

### Final Answer:
The correct answer is **Option 4: All statements I, II, and III are incorrect.**