Glycolate accumulates in chloroplast there is
low CO2
high CO2
bright light
low temperature
A.
low CO2
Glycolate is a respiratory substrate in photo respiration, which is formed in high concent ration of O2 but low concentration of CO2 under the influence of RuBP oxygenase in chloroplast. When temperature and CO2 content are high the affinity of RuBP carboxylase increases for O2 but decreases for carbondioxids. Glycolate is produced as intermediate in C3 cycle.
As compared to sun plants, the plants, which are adopted to low light intensity possess
more extended root system
very high rate of CO2 fixation
larger photosynthetic units
more extended shoot system
Oxygen released in photosynthesis comes outby
photophosphorylation
photolysis of water
photorespiration
Kelvin cycle
First transistory chemical formed by reaction between CO2 and RUBP is
PGA
PGAL/ GAP
dihydroxy acetone phosphate
2 carboxy, 3-keto, 1-5 biphosphoribotol
The carboxylating enzyme present in bundle sheath cells of maize leaves is
RUBP carboxylase
hexokinase
carbonic anhydrase
PEP-carboxylase
Which of the following is formed in light reaction of photosynthesis?
ATP
NADPH2
O2
All of the above
