Prepare for NEET Biology Photosynthesis in Higher Plants (Light Phase) with MCQs & PYQs on NEET.GUIDE. Access free practice, previous year questions, and expert help to study photochemical reactions, PSI, PSII, and ATP formation.
NEET Questions / Botany / Photosynthesis in Higher Plants / Light Phase
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
In plants, the high concentration of in the bundle sheath cells primarily serves to:
Increase ATP production during the Calvin cycle
Facilitate water storage within the leaf
Minimize photorespiration by suppressing RuBisCO's oxygenase activity
Enhance light absorption by the bundle sheath chloroplasts
A crop plant exhibits reduced photorespiration, enhanced water use efficiency, high photosynthetic rates at elevated temperatures, and improved nitrogen utilization. Which photosynthetic pathway is this plant MOST likely using?
C3
C4
CAM
Both C3 and C4
Compared to C3 plants, a plant with significantly lower photorespiration rates at high temperatures is likely to have:
Lower photosynthetic efficiency
Higher photosynthetic efficiency
Similar photosynthetic efficiency
No photosynthesis at high temperatures
A researcher observes a plant exhibiting high photosynthetic rates even under high light intensity and temperature conditions. Which of the following is the LEAST likely explanation for this observation?
The plant utilizes a C4 photosynthetic pathway.
The plant exhibits low photorespiration rates.
The plant has an extensive root system.
The plant effectively manages water loss.
In photorespiration, which is light induced cyclic oxidation of photosynthetic intermediates with the help of oxygen, the substrate is
Glycolate
Glucose
Pyruvic acid
Acetyl Co-A
In photorespiration, which is light induced cyclic oxidation of photosynthetic intermediates with the help of oxygen, the substrate is
Glycolate
Glucose
Pyruvic acid
Acetyl Co-A
I. It is the characteristics of plants
II. It is the characteristics of plants
III. It occurs in chloroplast
IV. It occurs in daytime
V. It occurs in night
Select the correct options in relation to photorespiration
I, III, IV
II, III, IV
I, III, V
II, IV, V
The substrate of photorespiration is formed in
Peroxisome
Mitochondrion
Chloroplast
Glyoxysome
