Casparian bands are found in

Options

A. Epidermis
B. General cortex
C. Endodermis
D. Pericycle

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks where Casparian bands are found. We need to identify the correct tissue layer from the given options: epidermis, general cortex, endodermis, or pericycle.

2. **Defining Casparian Bands**: Casparian bands, also known as Casparian strips, are specialized structures found in plant roots. They are bands of cell wall material that are deposited in specific areas of the cell walls of certain cells.

3. **Identifying the Location**: Casparian bands are specifically located in the endodermis, which is the innermost layer of the cortex in roots. This layer plays a crucial role in regulating the movement of water and solutes into the vascular system of the plant.

4. **Chemical Composition**: The Casparian bands are chemically distinct from the surrounding cell walls. They are primarily composed of suberin, which is a waxy substance that helps to block the passive flow of water and solutes, thus controlling their entry into the vascular tissue (stele) of the plant.

5. **Conclusion**: Based on the above information, we can conclude that Casparian bands are found in the endodermis. Therefore, the correct answer to the question is "endodermis."

**Final Answer**: Casparian bands are found in the endodermis.

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