Consider the following statement: -
1. PEP carboxylase has a high specificity for carbon dioxide and it never picks up oxygen -
2. Kranz anatomy and `C_(4)` metabolism are found in only monocots of hot climates and not in dicots. -
Which of the statement given above is/are correct?

Options

A. 1 only
B. 2 only
C. Both 1 and 2
D. Niether 1 and 2

Answer

To determine the correctness of the given statements regarding PEP carboxylase and Kranz anatomy in C4 plants, let's analyze each statement step by step.

### Step-by-Step Solution:

1. **Analyzing Statement 1:**
- The statement claims that "PEP carboxylase has a high specificity for carbon dioxide and it never picks up oxygen."
- PEP carboxylase (also known as phosphoenolpyruvate carboxylase) is an enzyme involved in the C4 photosynthetic pathway.
- This enzyme specifically catalyzes the fixation of carbon dioxide (CO2) to phosphoenolpyruvate (PEP) to form oxaloacetic acid (OAA).
- Importantly, PEP carboxylase does not have an oxygenase activity, meaning it does not react with oxygen (O2).
- Therefore, this statement is **correct**.

2. **Analyzing Statement 2:**
- The statement claims that "Kranz anatomy and C4 metabolism are found only in monocots of hot climates and not in dicots."
- Kranz anatomy refers to the specialized structure of leaves in C4 plants, where the bundle sheath cells surround the vascular tissue and are involved in the C4 pathway.
- While it is true that many C4 plants are monocots (like maize and sugarcane), Kranz anatomy and C4 metabolism are not exclusive to monocots.
- Some dicots, such as Amaranthus and certain species of Euphorbia, also exhibit C4 photosynthesis and Kranz anatomy.
- Therefore, this statement is **incorrect**.

### Conclusion:
- Based on the analysis, the first statement is correct, while the second statement is incorrect.
- Thus, the answer is that **only the first statement is correct.**

### Final Answer:
- **Only Statement 1 is correct.**