The living cell was first discovered by

Options

A. R.Hooke
B. A.V. Leeuwenhoek
C. N.Grew
D. R. Brown

Answer

**Step-by-Step Solution:**

1. **Identify the Question**: The question asks who first discovered the living cell.

2. **Consider the Options**: The options provided are:
- A) R, O, B, A, V, L, N, O, C, N, G, U
- B) D, R, Brown

3. **Recall Historical Context**: The discovery of living cells is attributed to Anton van Leeuwenhoek, who used a microscope to observe microorganisms.

4. **Review Key Contributions**:
- Anton van Leeuwenhoek is known for observing free-living cells in pond water and algae (specifically Pyrogira) in 1674.
- Robert Hooke is known for coining the term "cell" after observing cork cells, but these were dead cells.
- Robert Brown discovered the nucleus in plant cells.

5. **Select the Correct Answer**: Based on historical facts, the correct answer is Anton van Leeuwenhoek, which corresponds to option B (A, V, L, N, H).

6. **Conclusion**: Therefore, the living cell was first discovered by Anton van Leeuwenhoek.

**Final Answer**: Option B (A, V, L, N, H) - Anton van Leeuwenhoek.

---