The certain endodermal cell which is present opposite to the xylem bundle remain thin - walled , these cells are

Options

A. bulliform cells
B. passage cells
C. companion cells
D. subsidiary cells

Answer

To answer the question regarding the endodermal cells that are located opposite the xylem bundle and remain thin-walled, we can follow these steps:

### Step 1: Identify the Location of the Cells
- The question specifies that we are looking for endodermal cells that are positioned opposite to the xylem bundle. In plant anatomy, the endodermis is the innermost layer of the cortex and surrounds the vascular bundles, including xylem and phloem.

### Step 2: Understand the Characteristics of the Cells
- The cells in question are described as being thin-walled. This characteristic is important because it indicates that these cells do not have the typical thickening associated with other endodermal cells.

### Step 3: Identify the Specific Type of Cells
- The specific type of endodermal cells that are thin-walled and located opposite the xylem bundle are known as **passage cells**. These cells are characterized by their lack of suberin deposition, which is a waxy substance that typically thickens the walls of other endodermal cells.

### Step 4: Explain the Function of Passage Cells
- Passage cells play a crucial role in the plant's physiology by facilitating the transport of water and minerals from the cortex to the xylem. Their thin walls allow for easier movement of substances compared to other endodermal cells that are more heavily fortified.

### Conclusion
- Therefore, the endodermal cells that are present opposite to the xylem bundle and remain thin-walled are called **passage cells**.

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