Select an incorrect statement regarding ground tissue system

Options

A. It includes all the tissues except epidermis and vascular bundles
B. It is partly derived from the dermatogens and partly from the periblem
C. The primary function of this tissue system is storage and manufacture of food material.
D. Usually it is differentiated into three main zones Cortex, Pericycle and Pith and medullary rays

Explanation

To solve the question of selecting an incorrect statement regarding the ground tissue system, we will analyze the options based on our understanding of the ground tissue system in plants.

### Step-by-Step Solution:

1. **Understand the Ground Tissue System**: The ground tissue system is a fundamental part of the plant body, constituting the bulk of the plant. It is responsible for various functions including storage, photosynthesis, and support.

2. **Identify Components of Ground Tissue**: The ground tissue system includes all tissues that are not part of the epidermis (outer layer) or vascular bundles (xylem and phloem). Therefore, it typically comprises parenchyma, collenchyma, and sclerenchyma tissues.

3. **Examine the Options**: We need to look at the provided statements regarding the ground tissue system to identify which one is incorrect.

- **Option 1**: "It includes all the tissue except epidermis and vascular bundles."
- This statement is correct as the ground tissue does exclude epidermis and vascular bundles.

- **Option 2**: "It is partly derived from the dermatogens and partly from the periblem."
- This statement is incorrect. The ground tissue system is actually derived from the pleurome and periblem, not dermatogens.

- **Option 3**: "The primary function of this tissue system is storage and manufacturing of food material."
- This statement is correct as one of the main functions of ground tissue is indeed to store and manufacture food.

- **Option 4**: "It is usually differentiated into three main zones: cortex, pericycle, pit, and medullary."
- This statement is also correct, as the ground tissue can be differentiated into these zones.

4. **Conclusion**: Based on the analysis, the incorrect statement regarding the ground tissue system is **Option 2**.

### Final Answer:
The incorrect statement regarding the ground tissue system is: **"It is partly derived from the dermatogens and partly from the periblem."**

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