Question

Assertion (A): Human body produces highly toxic substances, which if not eliminated may cause death.

Reason (R): Excretory substance removes nitrogenous waste from the body.

विकल्प

• 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 and R is the correct explanation of A.

Explanation:

The assertion is true because human metabolic processes constantly generate highly toxic byproducts, such as ammonia, which can disrupt cellular function and lead to death if they accumulate in the body. The reason is also true and serves as the correct explanation because it identifies the primary mechanism of this biological cleanup: excretion. By continuously filtering and removing these poisonous nitrogenous wastes from the bloodstream, the excretory system prevents toxicity and directly sustains human life.