(d) When the fertilisation is internal and development is external
Ans: (c)
231. Red blood corpuscles are formed in: [UDC 1993]
(a) liver
(b) small intestine
(c) kidneys
(d) bone marrow
Ans: (d)
232. How much blood does an average adult have in the body?
(a) 3 - 4 liters
(b) 4 - 5 liters
(c) 5 - 6 liters
(d) 6 - 7 liters
Ans: (c)
233. Convex lenses are used for the correction of:
(a) astigmatism
(b) short sightedness
(c) cataract
(d) long sightedness
Ans: (d)
234. The salivary gland secrete saliva which contains the enzyme: [CBI 1994]
(a) pepsin
(b) renin
(c) ptyalin
(d) lipase
Ans: (c)
235. Which sugar is present in considerable amount in the blood? [CDS 1994]
(a) Glucose
(b) Fructose
(c) Galactose
(d) Sucrose
Ans: (a)
236. Foetus development in woman"s womb can be ascertained by :
(a) CAT scanning
(b) PTT scanning
(c) Ultrasound
(d) Co-27 experiment
Ans: (c)
237. The .internal secretion of ______ helps in digestion. [Bank PO 1988]
(a) citric acid
(b) sulphuric acid
(c) acetic acid
(d) hydrochloric acid
Ans: (d)
612