In a woody dicotyledonous tree, which of the following parts will mainly consist of primary tissue?

Options

A. all parts
B. stem and root
C. flowers, fruits and leaves
D. shoot tip and root tip

Answer

To determine which parts of a woody dicotyledonous tree mainly consist of primary tissue, we can analyze the options provided. Here’s a step-by-step solution:

### Step 1: Understand Primary and Secondary Tissues
- Primary tissues are those that are formed during the initial growth of the plant, primarily from the apical meristems.
- Secondary tissues are formed later, primarily through the activity of the cambium, which leads to secondary growth.

### Step 2: Analyze the Options
1. **All Parts**: This option suggests that all parts of the tree consist of primary tissue. However, we know that woody dicots undergo secondary growth, which means secondary tissues are present in many parts.

2. **Root and Stem**: In the roots and stems of woody dicots, both primary and secondary tissues are present. The cambium allows for secondary growth, which means these parts contain significant amounts of secondary tissue.

3. **Flowers, Fruits, and Leaves**: These parts do not have cambium and therefore do not undergo secondary growth. They mainly consist of primary tissues.

4. **Shoot Tip and Root Tip**: These areas contain meristematic tissues, which are responsible for primary growth. However, they also have primary tissues.

### Step 3: Conclusion
- Since flowers, fruits, leaves, and the shoot and root tips primarily consist of primary tissues and do not undergo secondary growth due to the absence of cambium, we can conclude that these parts mainly consist of primary tissue.
- Therefore, the correct answer is that all parts of a woody dicotyledonous tree consist of primary tissues.

### Final Answer
The answer is **All parts** of the woody dicotyledonous tree mainly consist of primary tissue.

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