Identify the plant part shown in the diagram and explain its features, including the function of labeled parts and the class it belongs to.

Here are the answers to question 4:

*a) The diagram represents a transverse section of a monocotyledonous root.
Two reasons for this identification are:

• The vascular bundles are arranged in a ring around a central pith, with many xylem arms (polyarch condition).
• The presence of root hairs (M) for absorption of water and minerals.

*b) The parts labeled are:
J: Epidermis (or Root hair cell)
K: Cortex
L: Endodermis

*c) The function of the part labeled M (root hair) is:

• To absorb water and mineral salts from the soil.

*d) The class from which this section was obtained is:

• Monocotyledoneae (or Monocotyledons)