In a longitudinal section of a root, starting from the tip upward, the four zones occur in the following order
(a) Cell division, cell enlargement, cell maturation, root cap
(b) Cell division cell matuation, cell enlargement, root cap
(c) Root cap, cell division, cell enlargement, cell maturation
(d) Root cap, cell division, cell maturation, cell enlargement

Options

A. Cell division, cell enlargement, cell maturation, root cap
B. Cell division cell matuation, cell enlargement, root cap
C. Root cap, cell division, cell enlargement, cell maturation
D. Root cap, cell division, cell maturation, cell enlargement

Answer

To solve the question regarding the order of zones in a longitudinal section of a root, we need to understand the structure of the root starting from the tip. Here’s a step-by-step breakdown:

### Step 1: Identify the zones in the root
The four zones we need to consider are:
1. Root cap
2. Cell division
3. Cell enlargement
4. Cell maturation

### Step 2: Understand the position of each zone
- **Root Cap**: This is the protective structure at the very tip of the root. It protects the root meristem as it pushes through the soil.
- **Cell Division Zone**: Just above the root cap, this zone contains actively dividing cells (meristematic tissue), which are responsible for the growth of the root.
- **Cell Enlargement Zone**: Following the cell division zone, this area is where the newly formed cells increase in size, contributing to the elongation of the root.
- **Cell Maturation Zone**: This is the area where the cells differentiate and mature into various types of cells that will perform specific functions.

### Step 3: Arrange the zones in order from the tip upward
Starting from the tip of the root, the correct order of the zones is:
1. Root cap
2. Cell division
3. Cell enlargement
4. Cell maturation

### Step 4: Analyze the options provided
Now, let’s look at the options given in the question:
(a) Cell division, cell enlargement, cell maturation, root cap
(b) Cell division, cell maturation, cell enlargement, root cap
(c) Root cap, cell division, cell enlargement, cell maturation
(d) Root cap, cell division, cell maturation, cell enlargement

The correct order we established matches option (c): **Root cap, cell division, cell enlargement, cell maturation**.

### Conclusion
The correct answer is option (c).

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