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.
Which of these is required for photosynthesis?
Chlorophyll
Mitochondria
Oxygen
Glucose
At very high light intensities, the rate of photosynthesis:
May decrease due to photoinhibition
Increases indefinitely
Remains constant
Decreases proportionally to temperature
Which of the following is NOT a limiting factor for photosynthesis?
Light intensity
Carbon dioxide concentration
Temperature
Oxygen concentration
How does temperature affect the rate of photosynthesis?
It influences enzyme activity
It changes the color of chlorophyll
It directly provides energy for the process
It has no effect
Which of the following factors does NOT directly influence the rate of photorespiration?
Light intensity
Oxygen concentration
Temperature
Carbon dioxide concentration
A plant is exposed to green light only. Which of the following is most likely to occur?
The rate of photosynthesis will be significantly reduced.
The rate of photosynthesis will be at its maximum.
The rate of photosynthesis will be slightly increased.
The rate of photosynthesis will remain unaffected.
How does an increase in atmospheric CO2 concentration initially affect the rate of photosynthesis, assuming other factors are optimal?
Increases the rate
Decreases the rate
Has no effect
Causes photorespiration
A plant is exposed to green light only. Which of the following is the most likely outcome regarding photosynthesis?
The rate of photosynthesis will be significantly reduced.
The rate of photosynthesis will be enhanced.
The rate of photosynthesis will proceed at a normal rate.
The plant will switch to utilizing green light efficiently.
Which of the following combinations of factors would most likely result in the highest rate of photosynthesis?
Low light intensity, low temperature, and low CO2 concentration
High light intensity, low temperature, and high CO2 concentration
High light intensity, optimal temperature, and high CO2 concentration
Low light intensity, high temperature, and low CO2 concentration
How does water stress primarily affect the rate of photosynthesis?
By directly inhibiting chlorophyll production
By increasing the rate of photorespiration
By reducing stomatal opening, limiting CO2 uptake
By denaturing the enzymes involved in the Calvin cycle
