Question

Assertion (A): The plants store some of the waste products in their body parts.

Reason (R): Raphides are the solid waste products of plants.

Options

• Both A and R are true and R is the correct explanation of A.

• Both A and R are true but R is not the correct explanation of A.

• A is true but R is false.

• A is false but R is true.

Answer 1

Both A and R are true but R is not the correct explanation of A.

Explanation:

The assertion is true because plants lack specialised excretory organs and often store metabolic waste products (like resins, gums, and crystals) inside their cellular vacuoles, old xylem, or leaves before shedding them. The reason is also true because raphides are needle-like crystals of calcium oxalate that function as solid metabolic waste products. However, the reason is not the correct explanation because the existence of raphides merely provides a specific example of a solid plant waste, rather than explaining the physiological mechanism of how or why plants store wastes throughout their body parts.