(c) Tapeworm
     (d) Trichina
Ans: (b)
252. Dental formula of man is :
     (a) 1232/1232
     (b) 2123/2123
     (c) 2132/2132
     (d) 2023/2023
Ans: (b)
253. In the case of a "test-tube baby"? [lAS1994]
     (a) fertilisation takes place inside the test tube
     (b) development of the baby takes place inside the test tube
     (c) fertilisation takes place outside the mother"s body
     (d) unfertilised egg develops inside the test tube
Ans: (c)
254. Element present in largest amount in human body is :
     (a) hydrogen
     (b) nitrogen
     (c) oxygen
     (d) carbon
Ans: (c)
255. Match the following :
     A. Rods         1. Nervous coat of eye
     B. Cones        2. Photo receptor cells
     C. Iris         3. Regulate amount of light entering the eye
     D. Retina       4. Receive stimulus of light
           A         B         C         D
     (a)   2         4         3         1
     (b)   4         2         1         3
     (c)   1         3         2         4
     (d)   3         1         4         2
Ans: (a)
256. How many bones are there in human body?
     (a) 180
     (b) 198
     (c) 206
     (d) 210
Ans: (c)
257. In Homo sapiens, fertilisation occurs in the:
     (a) uterus
     (b) ovary
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