Who among the following scientist gave theory of germplasm and discard the theory of use and disuse of organ?

Options

A. A.Weisman
B. Alferd Walface
C. Hugo-de-Vries
D. Thomas Malthus

Answer

To solve the question, we need to identify the scientist who proposed the theory of germplasm and rejected the theory of use and disuse of organs. Here’s a step-by-step breakdown of the solution:

1. **Understanding the Theories**:
- The theory of germplasm states that hereditary information is passed down through germ cells (sperm and egg) and not through somatic cells (body cells).
- The theory of use and disuse, proposed by Lamarck, suggests that traits acquired during an organism's lifetime can be passed on to its offspring.

2. **Identifying the Scientist**:
- The scientist who is known for the theory of germplasm is August Weismann. He argued against Lamarck’s theory by stating that only germ cells contribute to heredity, thus discarding the idea that acquired traits can be inherited.

3. **Evaluating Other Options**:
- Alfred Wallace is known for his work on natural selection alongside Charles Darwin.
- Hugo de Vries is recognized for his work on mutations.
- Thomas Malthus contributed to the field of population ecology.

4. **Conclusion**:
- Based on the information gathered, the correct answer to the question is August Weismann, as he is the one who proposed the theory of germplasm and rejected the theory of use and disuse.

**Final Answer**: August Weismann

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