Plant Physiology UPSC Questions

Biology

Plant Physiology MCQ Questions


7.
Where does the Calvin Cycle take place in C4 plants?
A.
Mesophyll cells
B.
Bundle sheath cells
C.
Stomata
D.
Chloroplasts of mesophyll
😑 View Answer Rough Work Error
ANSWER :
B. Bundle sheath cells
8.
What is the function of accessory pigments in photosynthesis?
A.
Split water
B.
Store energy
C.
Absorb additional wavelengths
D.
Release oxygen
😑 View Answer Rough Work Error
ANSWER :
C. Absorb additional wavelengths
9.
What does PEPCase enzyme catalyze in C4 plants?
A.
Conversion of RuBP to PGA
B.
Fixation of CO2 to PEP
C.
Reduction of NADP+
D.
Synthesis of glucose
😑 View Answer Rough Work Error
ANSWER :
B. Fixation of CO2 to PEP
10.
What is the source of the oxygen released during photosynthesis?
A.
CO2
B.
Carbohydrates
C.
H2O
D.
OAA
😑 View Answer Rough Work Error
ANSWER :
C. H2O
11.
What is the optimum temperature range for C3 plants?
A.
20-25°C
B.
30-40°C
C.
Above 40°C
D.
Below 15°C
😑 View Answer Rough Work Error
ANSWER :
A. 20-25°C
12.
Which scientist used radioactive 14C to trace the path of carbon in photosynthesis?
A.
T.W. Engelmann
B.
Melvin Calvin
C.
Cornelius van Niel
D.
Jan Ingenhousz
😑 View Answer Rough Work Error
ANSWER :
B. Melvin Calvin