Statement A : Ribosomes are membraneless organelles found in all cells.
Statement B : Cytoplasm is the main arena of cellular activities.

Options

A. Only statement A is incorrect
B. Only statement B is incorrect
C. Both the statement are incorrect
D. Both the statement are correct

Answer

To analyze the statements provided in the question, we will break down each statement step by step.

### Step 1: Evaluate Statement A
- **Statement A**: "Ribosomes are membraneless organelles found in all cells."
- Ribosomes are indeed organelles that do not have a surrounding membrane.
- They are the smallest organelles and are crucial for protein synthesis.
- Ribosomes are found in both prokaryotic cells (like bacteria) and eukaryotic cells (like plant and animal cells).
- Therefore, Statement A is **correct**.

### Step 2: Evaluate Statement B
- **Statement B**: "Cytoplasm is the main arena of cellular activities."
- The cytoplasm is the gel-like substance that fills the cell and surrounds the organelles.
- It contains various components such as ions, proteins, enzymes, and organelles, which are essential for cellular processes.
- Many metabolic reactions occur in the cytoplasm, making it a central area for cellular activities.
- Therefore, Statement B is also **correct**.

### Conclusion
- Both Statement A and Statement B are correct. Thus, the answer to the question is that both statements are true.

### Final Answer
Both statements are correct.

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