Which adaptation is NOT associated with desert plants to minimise water loss through transpiration?

1. Reduced number of stomata
2. Thick, waxy cuticle
3. Deep root systems
4. Increased leaf surface area

Assertion (A): Spraying of pesticides and insecticides can cause water pollution.

Reason (R): Pesticides and insecticides are non-biodegradable agricultural wastes.

1. (A) is true and (R) is false.
2. (A) is false and (R) is true.
3. Both (A) and (R) are true.
4. Both (A) and (R) are false.

Which of the following statements are correct?

P — Night blindness is caused by the deficiency of Vitamin A.

Q — Utriculus gives dynamic balance to the body.

R — Neuron is a single cell.

S — Fossil fuels are inexhaustible sources of energy.

1. Q and S
2. R and S
3. P and Q
4. P and R

Name the following:

(a) The endocrinal cells which secrete testosterone.

(b) The fluid which surrounds the developing embryo.

(c) A national campaign in India which aims to eliminate open defecation.

(d) Hormone responsible for the bending of a plant shoot towards light.

(e) The sensory organ present in the Cochlea for hearing.