CBSE
Multiple Choice QuestionsThe carboxylating enzyme present in bundle sheath cells of maize leaves is
RUBP carboxylase
hexokinase
carbonic anhydrase
PEP-carboxylase
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
Glycolate accumulates in chloroplast there is
low CO2
high CO2
bright light
low temperature
How many pigment molecules constitute a single photosystem?
2500
250-400
2000
2
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 maximum elements found in cytoplasm is
C
He
H
N
Which of the following inhibits O2 release in light phase?
Zeatin
PMA
DCMU
None of these
Which of the following is formed in light reaction of photosynthesis?
ATP
NADPH2
O2
All of the above
Calvin cycle takes place in
grana
stroma
intra thylakoid
matrix
Oxygen released in photosynthesis comes outby
photophosphorylation
photolysis of water
photorespiration
Kelvin cycle
