Passage cells are also called as

Options

A. tranfusion tissue
B. translocating tissue
C. transporting tissue
D. all of these

Answer

**Step-by-Step Solution:**

1. **Understanding Passage Cells**: Passage cells are specialized cells found in the endodermis of roots. They play a crucial role in the movement of water and nutrients.

2. **Modification of Endodermal Cells**: These cells are modified endodermal cells that allow for the transport of water (H2O) and mineral salts from the cortex to the xylem.

3. **Characteristics of Passage Cells**: Passage cells have very thin walls and lack the typical deposits found in other endodermal cells, such as Casparian strips or suberin. This structural feature facilitates the movement of water.

4. **Function of Passage Cells**: The primary function of passage cells is to allow the diffusion of water and minerals into the xylem, rather than actively transporting them. This is why they are not classified as transport cells but rather as cells that facilitate movement.

5. **Terminology**: Due to their function in allowing the movement of water and minerals, passage cells are also referred to as "transfusion tissues."

6. **Conclusion**: Therefore, the alternative name for passage cells is "transfusion tissues."

**Final Answer**: Passage cells are also called "transfusion tissues."

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