Question

What are called passage cells?

Answer 1

Some of the cells in the endodermis are thin-walled and are known as passage cells. The passage cells allow water to pass into the xylem vessels 

The layer of the root's epidermis that produces root hairs is known as the piliferous layer.

Answer 2

Answer:

Passage cells:

In the roots, there are certain endodermal cells which are modified to allow the transport of water. These are the cells which are opposite to the protoxylem elements. These cells have a thin wall and there is no deposition of suberin-like the Casparian strips. These cells are known as passage cells due to its function to transport water and minerals salts from the cortex to the xylem elements.

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