Casparian strips are present in the ______ of the root

Options

A. Endodermis
B. Cortex
C. Pericycle
D. Epidermis

Answer

**Step-by-Step Solution:**

1. **Understanding the Structure of the Root:**
- The root is composed of several layers, starting from the outermost layer, which is the epidermis, followed by the cortex, and then the endodermis.

2. **Identifying the Endodermis:**
- The endodermis is a specific layer located inside the cortex. It acts as a selective barrier regulating the flow of water and nutrients into the vascular system of the root.

3. **Defining Casparian Strips:**
- Casparian strips are specialized structures found in the endodermis. They are made up of suberin, a waxy substance that creates a barrier to the passive flow of substances.

4. **Locating the Casparian Strips:**
- The deposition of suberin in the endodermis forms the Casparian strips, which are crucial for controlling the movement of water and solutes into the vascular bundles.

5. **Conclusion:**
- Based on the above information, we can conclude that Casparian strips are present in the endodermis of the root.

**Final Answer:** Casparian strips are present in the **endodermis** of the root.

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