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376: Match List I with List II and select the correct answer using the codes given below the Lists :

List I List II

(Substance) (Physiological role)

I. Ptyalin (A) Converts angioten-sinogen in blood into angiotensin
II. Pepsin (B) Digests starch
III. Renin (C) Digests proteins
IV. Oxytocin (D) Hydrolyses fats
(E) Induces contraction of smooth muscles
Codes:

(a) I-B, II-C, III-A, IV-E
(b) I-C, II-D, III-B, IV-E
(c) I-B, II-C, IH-E, IV-A
(d) I-C, II-A, III-B, IV-D
377: Which of the following enters human body through skin:

(a) Tapeworm

(b) Hookworm

(c) Ringworm

(d) Threadworm
378: The heart of human embryo starts beating

(a) in the first week of its development

(b) in the third week of its development

(c) in the fourth week of its development

(d) in the sixth week of its development
379: A passing motorcycle causes distortion or disturbance with reception of signal in radio and T.V. The cause of this is

(a) The intense sound waves effect the small electronic devices of the receptor

(b) The vehicle's metal parts block/distort the radio waves

(c) The spark plug fitted in the engine produces electro-magnetic signals due to sparking

(d) Modern motor-cycles are fitted with electric ignition system which produces radio waves
380: Chlorophyll is a/an:

(a) Halogen acid

(b) A green pigment found in the plants

(c) A chloro-organic compound

(d) Element
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