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.
Related Questions
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
Which factor is not limiting in normal condition for photosynthesis?
Air
Carbon dioxide
Water
Chlorophyll
Photosynthetic enhancement with flashing light was first observed by
Benson and Calvin
Hill and Calvin
Hatch and Slack
Emerson and Arnold
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
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
Compensation point refers to
Rate of photosynthesis = Rate of respiration
Rate of photosynthesis = Rate of splitting
Rate of photosynthesis = PGA formation
Rate of photosynthesis = RuBP formation
A researcher exposes two genetically identical plants to different light intensities. Plant A receives high intensity monochromatic red light, while Plant B receives low intensity polychromatic light. Assuming all other factors are optimal, which statement is MOST likely true regarding the quantum yield of photosystem II (ΦPSII)?
Plant A will likely have a higher ΦPSII than Plant B.
Plant B will likely have a higher ΦPSII than Plant A.
The ΦPSII will be approximately equal in both plants.
The ΦPSII will be zero in both plants due to the different light conditions.
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.
The major limiting factor for photosynthesis is
Light
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.
