Bast fibres present in woody stem belong to :

Options

A. cork
B. phloem
C. cortex
D. xylem

Explanation

To determine the correct answer to the question "Bast fibres present in woody stem belong to:", we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Term "Bast Fibres":**
- Bast fibres are also known as phloem fibres. They are specialized fibers that are part of the plant's vascular system.

2. **Identify the Location of Bast Fibres:**
- Bast fibres are found in the phloem tissue of plants. Phloem is responsible for the transport of nutrients, particularly sugars produced by photosynthesis.

3. **Analyze the Options Given:**
- The options provided are:
- A) Cork
- B) Phloem
- C) Cortex
- D) Xylem

4. **Evaluate Each Option:**
- **Cork:** This is part of the outer protective layer of the plant and does not contain bast fibres. (Incorrect)
- **Phloem:** This is the correct answer as bast fibres are specifically found in the phloem tissue. (Correct)
- **Cortex:** This is the layer between the epidermis and the vascular tissue, but it does not contain bast fibres. (Incorrect)
- **Xylem:** This tissue is responsible for water transport and does not contain bast fibres. (Incorrect)

5. **Conclusion:**
- Based on the analysis, the bast fibres present in the woody stem belong to phloem. Therefore, the correct answer is **B) Phloem**.

### Final Answer:
Bast fibres present in woody stem belong to **phloem**.