What does NADPH2 provide?
Correct answer D. All of these
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Biology MCQs
Page 31 of Biology multiple-choice questions with answers. Tap an option to check yourself.
Page 31 of 75
Where do the light reactions of photosynthesis take place?
Correct answer B. Grana
Which substance is reduced in photosynthesis?
Correct answer A. CO2
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What type of mirror is used as a vehicle’s rear-view mirror?
Correct answer D. Convex
Which pigment is blue-green in colour?
Correct answer D. Chlorophyll a
What proportion of the leaf surface do stomata cover?
Correct answer B. 1-2 %
What share of total photosynthesis is carried out by land plants?
Correct answer C. 10%
Which colour of light causes the greatest food production in green plants?
Correct answer D. Red
Which organism was used to obtain the first action spectrum?
Correct answer B. Spirogyra
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Who obtained the first action spectrum?
Correct answer B. T. W. Engelmann
What percentage of the light falling on a leaf is absorbed for photosynthesis?
Correct answer B. 1%
At what wavelength does the chlorophyll a molecule of photosystem I absorb light most strongly?
Correct answer C. 700
Van Niel’s hypothesis about the source of oxygen in photosynthesis was based on studies of which organisms?
Correct answer B. Bacteria
What percentage of the air is carbon dioxide?
Correct answer B. 0.03-0.04
What is the net yield of water molecules in photosynthesis?
Correct answer C. 0 molecule
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Trachoma is a disease of which organ?
Correct answer B. Eyes
How is short-sightedness corrected?
Correct answer C. Concave lens
Leukaemia is a disease of which part of the body?
Correct answer B. Blood
In which organisms do carotenoids perform a protective function?
Correct answer C. Both of these
Myopia is a disorder of which organ?
Correct answer B. Eyes