The binding of RuBisCO for O2 and CO2 is –
a. Non- competitive
b. Competitive
c. Uncompetitive
d. Mixed

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The product of Photorespiration is-
a. Phosphoglycerate
b. Phosphoglycolate
c. both a and b
d. Malate

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Which of the following is wrong regarding photorespiration?
a. utilization of ATP
b. Production of little sugar
c. Release of CO2
d. Wasteful Process

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In C4 plants, photorespiration does not occur-
a. They have different RuBisCO.
b. They have no RuBisCO.
c. They have mechanism to increase the concentration of CO2
d. They cannot utilize ATP

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The rate of photosynthesis is important in determining-
a. Height of plant
b. Girth of Plant
c. Yield of Plant
d. Growth of plant

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At any point, the rate of photosynthesis is determined by the factor which is available at---------- levels.
a. optimal
b. higher than required
c. sub-optimal
d. won’t depend

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Who gave the law of limiting factors and when?
a. Lieman-1906
b. Blackman-1905
c. Lieman-1905
d. Blackman-1906

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What kind of graph one will obtain if he observes CO2 fixation rates at low intensities?
a. Parabola
b. Linear
c. Circular
d. Hyperbola

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Light is a limiting factor for plants in shade-
a. as they do not get full sunlight
b. as they do not get at most 10 % of full sunlight
c. as they do not get at least 50 % of full sunlight
d. as they do not get at most 70% full sunlight

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What is the major limiting factor for photosynthesis?
a. CO2
b. Water
c. Sunlight
d. Chlorophyll

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