Answer in one word:
(i) Part of the brain that controls posture and balance of the body.
(ii) Part of the neuron that acquires information.
(iii) Part of the neuron through which the information travels as an electric impulse.

Correct answers are:

(i) Part of the brain that controls the posture and balance of the body - Cerebellum

(ii) Part of the neuron that acquires information - Dendrite

(iii) Part of the neuron through which the information travels as an electric impulse - Axon