Read the following statements regarding evolution :
A. The Therapsids were synapsids who gava rise to mammals .
B. The seed ferns were the common ancestors of all gymnosperms and angiosperms.
C. The seed siltation was given by Darwin for single-step large mutation.
D. The work of Thomas Malthus on pollution influenced Darwin .
Choose the correct option based on the accuracy of these statements.

Options

A. A, C and D are correct
B. Only B ,and C are incorrect
C. A, C and D are incorrect
D. Only C ,and D are incorrect

Answer

To solve the question regarding the statements about evolution, we will analyze each statement one by one to determine their accuracy.

### Step-by-Step Solution:

1. **Statement A: The Therapsids were synapsids who gave rise to mammals.**
- **Analysis**: This statement is correct. Therapsids are indeed a group of synapsids that are considered to be the ancestors of mammals. Synapsids have a single temporal fenestra (opening) in their skulls, which is a characteristic feature.
- **Conclusion**: Statement A is true.

2. **Statement B: The seed ferns were the common ancestors of all gymnosperms and angiosperms.**
- **Analysis**: This statement is also correct. Seed ferns (Pteridosperms) are believed to be an early group of seed-producing plants that are ancestral to both gymnosperms and angiosperms. They had characteristics that are common to both groups.
- **Conclusion**: Statement B is true.

3. **Statement C: The seed siltation was given by Darwin for single-step large mutation.**
- **Analysis**: This statement is incorrect. The concept of "saltation" (not "siltation") refers to large mutations occurring in a single step, but this idea was proposed by Hugo de Vries, not Charles Darwin. Darwin is known for his theory of natural selection, not for the idea of saltation.
- **Conclusion**: Statement C is false.

4. **Statement D: The work of Thomas Malthus on pollution influenced Darwin.**
- **Analysis**: This statement is incorrect. Thomas Malthus's work on population dynamics, particularly his essay on the principle of population, influenced Darwin's thoughts on natural selection. However, it did not relate to "pollution." The influence was about competition for resources and population growth.
- **Conclusion**: Statement D is false.

### Final Evaluation:
- **Correct Statements**: A and B are correct.
- **Incorrect Statements**: C and D are incorrect.

### Answer:
The correct option based on the accuracy of these statements is that **Statements A and B are true, while C and D are false.**