Physiology of Plants and Animals CDS Questions

CDS Biology

Physiology of Plants and Animals MCQ Questions


7.
The light-independent reactions of photosynthesis (Calvin cycle), where CO2 is fixed into glucose, occur in the:
A.
Thylakoid membrane
B.
Cell wall
C.
Mitochondria
D.
Stroma of the chloroplast
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ANSWER :
D. Stroma of the chloroplast
8.
During photosynthesis, the oxygen released by green plants is derived from:
A.
Atmospheric nitrogen
B.
Water
C.
Glucose
D.
Carbon dioxide
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ANSWER :
B. Water
9.
Which structures on the leaf surface allow the entry of carbon dioxide required for photosynthesis?
A.
Lenticels
B.
Trichomes
C.
Stomata
D.
Cuticle
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ANSWER :
C. Stomata
10.
Which of the following is NOT among the major factors affecting the rate of photosynthesis?
A.
Light intensity
B.
Temperature
C.
Carbon dioxide concentration
D.
Soil pH
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ANSWER :
D. Soil pH
11.
Cellular respiration is the process by which cells:
A.
Release oxygen into the atmosphere
B.
Break down glucose to release energy in the form of ATP
C.
Synthesise glucose using sunlight
D.
Absorb water from the soil
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ANSWER :
B. Break down glucose to release energy in the form of ATP
12.
In eukaryotic cells, the major site where most ATP is generated during aerobic respiration is the:
A.
Nucleus
B.
Chloroplast
C.
Ribosome
D.
Mitochondrion
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ANSWER :
D. Mitochondrion