SSC Biology Previous year questions Set 32

311. On the average, what percentage of human body has the element of oxygen ?[SSC Section Officer (Commercial Audit) 2003]
A. 65
B. 25
C. 10
D. 5
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312. Glaucoma is a disease of the____. [SSC Section Officer (Commercial Audit) 2003]
A. Skin
B. Lungs
C. Liver
D. Eyes
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313. Which among the following bears smallest living cell ? [SSC Section Officer (Audit) 2003]
A. Bacterium
B. Mollusc plasma
C. Virus
D. Yeast
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314. The chemical used for destroying Fungi in water tanks is: [SSC Section Officer (Commercial Audit) 2003]
A. Copper sulphate
B. Magnesium sulphate
C. Zinc sulphate
D. Nitric acid
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315. Dehydration in human body is caused due to the deficiency of___.[SSC Section Officer (Audit) 2003]
A. Vitamin
B. Salt
C. Hormone
D. Water
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316. Human kidney disorder is caused by the pollution of–[SSC Section Officer (Audit) 2003]
A. Cadmium
B. Iron
C. Cobalt
D. Carbon
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317. Yawning occurs___ [SSC Section Officer (Audit) 2003]
A. due to excess concentration of CO2 in blood
B. due to excess concentration of CO2 in lungs
C. due to excess concentration of O2 in lungs
D. None of these
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318. The source of oxygen generated during photosynthesis is :[SSC CGL Prelim 2004]
A. water
B. carbon dioxide
C. chlorophyll
D. mesophyll cells
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319. Which among the following living being has respiratory organ, but does not have brain?[SSC Section Officer (Audit) 2003]
A. crab
B. starfish
C. blood succor
D. silverfish
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320. Who among the following analysed DNA for the first time ?[SSC Section Officer (Audit) 2003]
A. Arthur Cornberg
B. Hargobind Khurana
C. M. W. Nirenberg
D. Watson and Krick
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