Non-osmotic theory of water absorption was proposed by

Options

A. Eaton
B. Kramer
C. Keller
D. Bennet-Clark et al.

Answer

To answer the question regarding who proposed the non-osmotic theory of water absorption, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding the Non-Osmotic Theory**:
- The non-osmotic theory of water absorption explains how plants can absorb water even when the external water concentration is lower than that inside the root cells. This absorption occurs against the concentration gradient.

2. **Energy Requirement**:
- This process requires energy because it involves moving water from a region of low concentration to a region of high concentration. The energy needed for this movement is derived from the respiration of root cells.

3. **Identifying the Scientist**:
- The question asks for the scientist who proposed this theory. The options provided are Eton, Cramer, Keller, and Bennett-Clark.

4. **Correct Answer**:
- The non-osmotic theory of water absorption was proposed by Bennett-Clark et al. Therefore, the correct answer is the fourth option: Bennett-Clark.

5. **Conclusion**:
- The non-osmotic theory is significant in understanding how plants manage to absorb water efficiently, even in conditions where osmotic pressure would suggest otherwise.