Limiting factors Multiple Choice Questions with Answers – PDF Download

MCQ 1: Primary factors controlling the rate of photosynthesis are known as:

1. inhibiting factors
2. limiting factors
3. expediting factors
4. supporting factors

MCQ 2: Under natural conditions, the atmospheric carbon dioxide (CO₂) remains stable at:

1. 0.0003
2. 0.0006
3. 0.0013
4. 0.0016

MCQ 3: Increase in temperature from 20 to 30 °C, causes:

1. boost in rate of photosynthesis
2. drop in the rate of photosynthesis
3. stability in the rate of photosynthesis
4. limiting factor on photosynthesis

MCQ 4: Photolysis of 12 water molecules result in:

1. 6 atoms of hydrogen
2. 12 atoms of hydrogen
3. 18 atoms of hydrogen
4. 24 atoms of hydrogen

MCQ 5: The higher the light wavelength, the:

1. more the energy of a photon
2. lesser the energy of a photon
3. lesser the energy of the protons
4. lesser the energy of positron