CBSE
Multiple Choice QuestionsIn sugarcane plant, 14CO2 is fixed in a malic acid, in which the enzyme that fixes CO2 is
ribulose phosphate kinase
fructose phosphatase
ribulose biphosphate carboxylase
phosphoenol pyruvic acid carboxylase
Stomata open or close due to the ion
Ca2+
Na+
K+
Cu+
Photorespiration takes place in plants where carbon fixation occurs through
Calvin cycle
Hatch and Slack cycle
Glycolysis
Krebs' cycle
Stomata of CAM plants
open during the night and close during the day
never open
are always open
open during the day and close at night
Boron in green plants assists in
photosynthesis
sugar transport
activation of enzymes
acting as enzyme cofactor
Blackman's law of limiting factor is applied to
respiration
transpiration
photorespiration
photosynthesis
Chlorophyll- a is characterized by the side group
methyl
aldehyde
phytol
ketone
Which one of the following is wrong in relation to photorespiration?
It is a characteristic of C4 -plants
It is a characteristic of C3 -plants
It occurs in chloroplasts
It occurs in daytime only
Who proved that oxygen evolved in photosynthesis comes from water?
Mayer
Calvin
Ruben, Hassid and Kamen
Blackman
The plant group in which stomata opens in night is
mesophytes
succulents
hydrophytes
None of the above
