SSC Biology Previous year questions Set 23

221. Our bones and teeth are generally made of — [SSC Section Officer (Audit) 1997]
A.Tricalcium phosphate
Answer – A.Tricalcium phosphate

222. Which of the following diseases affects women easily than that of men ?[SSC Section Officer 1997]
A.Heart attack
C.Joint arthritis
Answer – A. Heart attack

223. Pituitary gland is located in—[SSC Section Officer 1997]
A. brain
B. kidney
C. liver
D. intestine
Answer – A. brain

224. What is the limit of MG/DL of blood sugar in the normal person at the time of fast ? [SSC Section Officer (Audit) 1997]
A. 40-60
B. 120-150
C. 70-100
D. 160-200
Answer –C. 70-100

225. The cross-section of a stem of tree has fifty rings, what is the age of the tree ?[SSC Section Officer (Audit) 1997]
A. 50 months
B. 5 years
C. 25 years
D. 50 years
Answer –D. 50 years

226. The pollination of maize takes place by – [SSC Section Officer 1997]
A. self-pollination
B. pollination by insects
C. pollination by air
D. pollination by rain
Answer – C. pollination by air

227. Exobiology deals with the study of _ [SSC CGL Prelim 1999]
A. external characters of living organisms
B. life on the surface of the earth
C. life in the outer layers of atmosphere
D. life in other planets and space
Answer –D. life in other planets and space

228. Animals do not have enzyme systems which enable them to make use of the energy from :[SSC CGL Prelim 1999]
A. fat
B. water
C. protein
D. carbohydrate
Answer –A. fat

229. A clone is a colony of : [SSC CGL Prelim 1999]
A. cells having different shapes
B. cells having similar shape
C. cells having similar genetic constitution
D. cells having different genetic constitutions
Answer –C. Cells having similar genetic constitution

230. The pollen grains of flowers pollinated by insects are :[SSC CGL Prelim 1999]
A. smooth and dry
B. rough and sticky
C. rough and dry
D. large and showy
Answer –B. rough and sticky

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