Q. 1005.0( 1 Vote )
(a) In above question, the P is a receptor. Eyes, ears, nose, tongue and skin contain cells like P (receptor).
(b) Nerves Q are sensory nerves.
(c) In above question, R is the effector. Muscles and glands are the examples of R (effectors).
(d) Nerves S are motor nerves.
(e) Messages travel through nerves Q (sensory nerves) and S (motor nerves) in the form of electrical impulses.
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