Youngest layer of secondary xylem in wood of dicot stem is located just

Options

A. Outside the cambium
B. Inside the cambium
C. Outside pith
D. Inside the cortex

Answer

To answer the question regarding the location of the youngest layer of secondary xylem in the wood of a dicot stem, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Vascular Tissue System**:
- The vascular tissue system in plants consists of xylem and phloem, which are responsible for the transport of water, nutrients, and food.

2. **Identify the Role of Cambium**:
- In dicot stems, there is a layer of tissue called cambium, which is responsible for the secondary growth of the plant. Cambium cells divide to produce new xylem and phloem.

3. **Determine the Direction of Growth**:
- The cambium produces new secondary xylem towards the inside and new secondary phloem towards the outside.

4. **Locate the Youngest Layer of Secondary Xylem**:
- Since the secondary xylem is produced towards the inside of the cambium, the youngest layer of secondary xylem will be located just inside the cambium.

5. **Evaluate the Options**:
- The options provided are:
- A) Outside of the cambium
- B) Inside of the cambium
- C) Outside pith
- D) Inside the cortex
- Based on our understanding, the correct option is B) Inside of the cambium.

### Final Answer:
The youngest layer of secondary xylem in the wood of a dicot stem is located just **inside of the cambium**.

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