Which of these is required for photosynthesis?
Chlorophyll
Mitochondria
Oxygen
Glucose
Related Questions
Etiolation in plants is caused when they
Are grown in dark
Have mineral deficiency
Are grown in intense light
Are grown in blue light
Blackman’s law of limiting factor is applicable to
Respiration
Transpiration
Photosynthesis
Protein synthesis
Which of the following combinations of factors would MOST SIGNIFICANTLY limit the rate of photosynthesis in a typical C3 plant?
Low light intensity, high CO2 concentration, and optimal temperature
High light intensity, low O2 concentration, and high humidity
High temperature, low CO2 concentration, and water stress
Low temperature, high CO2 concentration, and waterlogged soil
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.
A mutation affects a plant's ability to synthesize carotenoids. Which of the following would be the MOST LIKELY consequence for photosynthesis under high light intensity?
Enhanced light absorption and increased photosynthetic rate.
Increased damage to chlorophyll and photosystems due to excessive light energy.
No significant change in photosynthetic rate or chlorophyll integrity.
Shift in the absorption spectrum towards longer wavelengths.
Very strong light has a direct inhibiting effect on photosynthesis, which is known as
Solarization
Etiolaration
Chlorosis
Defoliation
A C4 plant and a CAM plant are grown under identical environmental conditions. Which statement BEST describes their relative water use efficiency (WUE) and photosynthetic rates under prolonged high light intensity and high temperature?
The C4 plant will have both higher WUE and a higher photosynthetic rate than the CAM plant.
The CAM plant will have higher WUE than the C4 plant, but the C4 plant will have a higher photosynthetic rate.
The C4 plant will have higher WUE than the CAM plant, but the CAM plant will have a higher photosynthetic rate.
The CAM plant will have both higher WUE and a higher photosynthetic rate than the C4 plant.
Photosynthetic enhancement with flashing light was first observed by
Benson and Calvin
Hill and Calvin
Hatch and Slack
Emerson and Arnold
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
Under conditions of high temperature and drought stress, a plant closes its stomata to conserve water. Which of the following is the MOST DIRECT consequence on the Calvin cycle?
Increased photorespiration due to oxygen accumulation.
Enhanced ATP synthesis due to increased proton gradient.
Reduced availability of CO2 limits carboxylation, leading to a decrease in RuBP regeneration.
Increased activity of Rubisco due to higher substrate concentration.
