Identify the correct statement.

Options

A. Because of marked climatic variations, plants growing near the sea shore do not produce annual rings.
B. The age of the plant can be determined by its height
C. Grafting is difficult in monocot plants as they have lack cambium
D. Healing of damaged tissue is because of activity of sclerenchyma cells.

Answer

To identify the correct statement from the given options, we will analyze each statement step by step.

### Step 1: Analyze the First Statement
**Statement:** "Because of marked climatic variations, plants growing near the seashore do not produce annual rings."

- **Explanation:** Annual rings, or growth rings, are formed due to the activity of the vascular cambium, which is influenced by seasonal changes. In seashore areas, the climatic variations are not marked, leading to the absence of distinct growth rings. Therefore, this statement is **correct**.

### Step 2: Analyze the Second Statement
**Statement:** "The age of a plant can be determined by its height."

- **Explanation:** The height of a plant is influenced by the activity of the apical meristem, which can vary significantly. Younger trees may be taller than older trees due to differences in growth rates. Thus, height is not a reliable indicator of age. Therefore, this statement is **incorrect**.

### Step 3: Analyze the Third Statement
**Statement:** "Grafting is difficult in monocot plants as they lack cambium."

- **Explanation:** Grafting involves joining a scion (part of one plant) to the stalk (part of another plant). This process requires the presence of cambium for successful tissue formation. Monocots do not have cambium, making grafting difficult. Therefore, this statement is **correct**.

### Step 4: Analyze the Fourth Statement
**Statement:** "Healing of damaged tissue is because of the activity of sclerenchyma cells."

- **Explanation:** Sclerenchyma cells are dead cells that provide structural support to the plant. Since they are dead, they do not participate in the healing process of damaged tissues. Therefore, this statement is **incorrect**.

### Conclusion
After analyzing all the statements, we find that the correct statements are:
1. The first statement is correct.
2. The third statement is also correct.

### Final Answer
The correct statements are the first and third statements.

---