Under laboratory conditions, a photosynthetic organism might convert 31% of the
ID: 89061 • Letter: U
Question
Under laboratory conditions, a photosynthetic organism might convert 31% of the light energy striking it to chemical bond energy of organic molecules. In reality, however, photosynthetic efficiency is far lower, closer to 5% or less.
Part A
Considering a plant growing in a natural environment, suggest the reasons for this discrepancy.
Select the four correct answers.
The capacity of a photosystem to absorb energy may be saturated by a level of light far below the intensity of sunlight. Many leaves may be shaded by leaves in the canopy above them. There is no light at night. There might be not enough oxygen in the air. Some of the energy is lost for a plant growth. Some of the energy is lost as heat and entropy. Not all light will be of an appropriate wavelength.Explanation / Answer
Answer
1. The capacity of a photosystem to absorb energy may be saturated by a level of light far below the intensity of sunlight.
2. Many leaves may be shaded by leaves in the canopy above them.
3. Some of the energy is lost as heat and entropy. 4. Not all light will be of an appropriate wavelength.Related Questions
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