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Biology 9 Chapter 7 Bioenergetics-6
1.
Carotenoids are commonly known as?
a) Accessory pigments
b) Cell pigments
c) None of these
d) Respiratory pigments
2.
Chlorophylls absorb mainly?
a) Blue and green light
b) Blue and red light
c) Green and yellow light
d) Green and red light
3.
An environmental factor, the absence or deficiency of which can decrease the rate of a metabolic reaction is known as?
a) Growth factor
b) Limiting factor
c) Co-factor
d) Metabolic factor
4.
Which one of the following acts as a limiting factor for photosynthesis?
a) All of these
b) Concentration of carbon dioxide
c) Temperature
d) Light intensity
5.
When light intensity is increased, the rate of photosynthesis?
a) None of these
b) Decreases
c) Increases
d) Becomes constant
6.
The rate of photosynthesis ___ with decrease in temperature?
a) None of these
b) Becomes constant
c) Decreases
d) Increases
7.
At much higher light intensity, the rate of photosynthesis?
a) All of these
b) Increases
c) Decreases
d) Becomes constant
8.
When concentration of carbon dioxide is rises, the rate of photosynthesis?
a) Becomes constant
b) None of these
c) Increases
d) Decreases
9.
Very high concentration of carbon dioxide causes?
a) None of these
b) Opening of stomata
c) Closure of stomata
d) Increase in photosynthesis
10.
Aerobic respiration is taking place in the presence of?
a) Sulphur
b) Hydrogen
c) Nitrogen
d) Oxygen
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