Multiple Choice QuestionsWhich 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
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
Who proved that oxygen evolved in photosynthesis comes from water?
Mayer
Calvin
Ruben, Hassid and Kamen
Blackman
The specific character of C4 plants is
bulliform cells
Kranz anatomy
parallel venation
isobilateral leaf
B.
Kranz anatomy
The C4 plants have Kranz anatomy. The vascular bundle of the leaf is surrounded by one or more layer of chloroplast, containing cells (bundle sheath cells). The bundle sheath cells lack grana in their chloroplast while mesophyll cells have well developed grana. The mesophyll cells are specialized for light reaction and initial CO2 fixation during photosynthesis. The CO2 is finally fixed inside bundle sheath cell through Calvin cycle.
Which one of the following contain agranal chloroplasts?
C3 plants
Succulants
C4 plants
Hydrophytes
Switch
