Prepare for NEET Biology Photosynthesis in Higher Plants with MCQs & PYQs on NEET.GUIDE. Get free practice, previous year questions, and expert guidance to grasp light and dark reactions.
The absorption spectrum of chlorophyll a and b shows peaks in the blue and red regions. Which statement best explains the green color of leaves?
Green light is preferentially absorbed by chlorophyll.
Green light is converted to heat energy within the leaf.
Green light is primarily reflected and transmitted, not absorbed.
Chlorophyll does not interact with green light.
Under conditions of high light intensity and limited CO2 availability, which process is most likely to be favored in chloroplasts?
Enhanced Calvin cycle activity
Increased non-cyclic photophosphorylation
Photorespiration
Increased synthesis of chlorophyll
The precise location of the oxygen-evolving complex (OEC) within the chloroplast is:
Stroma
Outer chloroplast membrane
Lumen side of the thylakoid membrane
Inner chloroplast membrane
Which of the following is NOT a direct product of the light-dependent reactions of photosynthesis?
ATP
NADPH
O2
Glucose
In C4 plants, the initial carboxylation reaction occurs in:
Mesophyll cells
Bundle sheath cells
Both mesophyll and bundle sheath cells
Neither mesophyll nor bundle sheath cells
Photorespiration is initiated by the enzyme RuBisCO's ability to also bind:
O2
CO2
N2
H2O
Which of the following is NOT a characteristic of C4 plants?
High CO2 compensation point
Kranz anatomy
Presence of PEP carboxylase
Dimorphic chloroplasts
The primary benefit of the C4 pathway is:
Minimizing photorespiration
Increasing water use efficiency
Enhancing light absorption
Reducing the need for RuBisCO
In photorespiration, RuBP is converted to:
PGA and phosphoglycolate
Two molecules of PGA
Two molecules of phosphoglycolate
PGA and oxaloacetate
Which organelle is involved in the salvage pathway of photorespiration?
Chloroplast
Mitochondrion
Peroxisome
Golgi apparatus
