Read a and b and identify correct choice Statement a. Agrobacterium tumefaciens causes crown gall in dicots Statement b. Agrobacterium tumefaciens enters host through wound and injuries

Options

A. b is correct, a is wrong
B. Both a and b are wrong
C. Both a and b are correct
D. a is correct, b is wrong

Answer

To solve the question, we will analyze both statements (a and b) regarding Agrobacterium tumefaciens and determine their correctness.

### Step-by-Step Solution:

1. **Understanding Statement A**:
- Statement A claims that "Agrobacterium tumefaciens causes crown gall in dicots."
- Agrobacterium tumefaciens is known to be a pathogenic bacterium that specifically infects dicotyledonous plants (dicots) and causes a disease known as crown gall. This disease is characterized by the formation of tumors at the crown of the plant, which is a correct assertion.

2. **Understanding Statement B**:
- Statement B states that "Agrobacterium tumefaciens enters host through wounds and injuries."
- This statement is also accurate. Agrobacterium tumefaciens typically enters the plant through wounds or injuries. The bacteria exploit these openings to transfer their T-DNA (transfer DNA) into the plant cells, leading to tumor formation.

3. **Conclusion**:
- Both statements A and B are correct. Therefore, the correct choice is that both statements are true.

### Final Answer:
Both Statement A and Statement B are correct.