1
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Which element is located at the centre of the porphyrin ring in chlorophyll?
A
Calcium
B
Magnesium
C
potassium
D
Manganese
2
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
In sugarcane plant 14CO2 is fixed to malic acid, in which the enzyme that fixes CO2 is
A
ribulose biphosphate carboxylase
B
phosphoenal pyruvic acid carboxylase
C
ribulose phosphate kinase
D
fructose phosphate.
3
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Stomata of CAM plants
A
are always open
B
open during the day and close at night
C
open during the might and close during the day
D
never open.
4
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Which one of the following is wrong in relation to photorespiration?
A
It occurs in chloroplast
B
It occurs in day time only
C
It is a characteristic of C4 plants
D
It is a characteristic of C3 plants.
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