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 accuracy of the statements related to evolution, we will analyze each statement one by one.

### 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. They are characterized by having a single temporal fenestra in the skull, which is a defining feature of synapsids.
- **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 among the ancestors of both gymnosperms and angiosperms, as they were early seed-producing plants that exhibited characteristics leading to the evolution of these two major groups of seed plants.
- **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 it was proposed by Hugo de Vries, not Charles Darwin. Darwin is known for his theory of natural selection, not for the idea of large mutations.
- **Conclusion:** Statement C is false.

4. **Statement D: The work of Thomas Malthus on pollution influenced Darwin.**
- **Analysis:** This statement is incorrect. While Thomas Malthus's work on population dynamics did influence Darwin's thinking about natural selection, the term "pollution" is not relevant in this context. Malthus discussed population growth and resource limitations, which are foundational to Darwin's theory, but the term used here is misleading.
- **Conclusion:** Statement D is false.

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

Based on the analysis:
- The correct option is that only statements C and D are incorrect.