FREE NEET Biology Practice MCQ Test: Neural Control And Coordination Exercise 1 Questions Answers With Detailed Explanations [PDF]

Answer: (c)

Answer: (a)

Adaptation is the ability of the eye to adjust to various levels of darkness and light.

Answer: (d)

Answer: (d)

The signal that travels along the length of a nerve fibre and is the means by which information is transmitted through the nervous system is called nerve impulse. During resting phase, inside of the plasma membrane is negatively charged (polarized, -70 mv, resting potential). As the stimulus reaches it becomes positively charged (+45 mV, action potential). This condition is known as depolarization of nerve fibres. As impulse passes away, it regains its original ionic distribution and becomes repolarized.

Answer: (d)

The anterior horns of spinal cord contains cells with fibres that form the anterior (motor) root end and are essential for the voluntary and reflex activity of muscles they innervate. If the anterior horn motor cells are destroyed, the nerves cannot regenerate and muscles are never useful again.

Answer: (c)

Answer: (a)

Answer: (a)

Ciliary body is a part of uvea. It is a circular structure just behind the iris composed of the ciliary muscle and ciliary processes which attach to the lens. The ciliary processes secrete the aqueous fluid, and the ciliary muscle modify focus by changing the shape of the lens.

Answer: (b)

Answer: (b)

Answer: (d)

Answer: (d)

Answer: (d)

Answer: (d)

Answer: (c)

Answer: (c)

Answer: (a)

Answer: (d)

The cerebellum is con cemed with coordination of muscular movement.

Answer: (c)

Answer: (d)

Sebaceous gland/Ceruminous gland are the wax secreting glands present in the ear canal.

Sweat glands also known as sudoriferous glands are tubular structures in the skin that produce sweat.

Prostate gland is a walnut sized gland located between the bladder and the penis which secretes fluid that nourishes and protects sperms.

Cowper’s gland/bulbourethral gland is one of the two small exocrine glands present in the reproductive system of many male mammals. It helps in lubrication of urethra for passage of spermatozoa by the secretion of viscous fluid known as pre-ejaculate.