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

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

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

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

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

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

At low light conditions, which plant responds to high CO2 conditions?
a. C3
b. C4
c. Neither
d. Both

C3 plants show saturation at----- ul/L.
a. 450
b. 360
c. 400
d Both a and b

Which of the following plants are grown in green house by exploiting a fact that higher CO2 leads more productivity?
a. Tomatoes
b. Papaya
c. Cycas
d. Pomegranate

Temperature will affect which process more sensitively?
a. Dark process
b. Non Cyclic Process
c. Cyclic Process
d. Splitting of water