Meristems are present in -
a) Root apex and shoot apex
b) Bases of leaves
c) Axillary buds
d) All

Options

A. Root apex and shoot apex
B. Bases of leaves
C. Axillary buds
D. All

Answer

To solve the question regarding the presence of meristems, we can break down the options and analyze each one step by step.

### Step 1: Understand what meristems are
Meristems are regions in plants that consist of undifferentiated cells capable of continuous division and growth. They are crucial for the growth of plants.

### Step 2: Identify the types of meristems
There are three main types of meristems:
1. **Apical Meristems**: Located at the tips of roots and shoots, responsible for primary growth (lengthening).
2. **Lateral Meristems**: Found in the vascular and cork cambium, responsible for secondary growth (thickening).
3. **Intercalary Meristems**: Located at the bases of leaves and nodes, contributing to growth in those areas.

### Step 3: Analyze the options provided in the question
- **Option a**: Root apex and shoot apex - This refers to the apical meristems.
- **Option b**: Bases of leaves - This refers to the intercalary meristems.
- **Option c**: Axillary buds - These also contain meristematic tissue.
- **Option d**: All - This implies that meristems are present in all the mentioned locations.

### Step 4: Conclusion
Since meristems are indeed present in the root apex, shoot apex, bases of leaves, and axillary buds, the correct answer is **d) All**.

### Final Answer
The correct answer is **d) All**.

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