Multiple choice

By which of the following ways would exposure to higher amounts of UV radiation (due to ozone depletion) impact the plant community?

  1. Increase in photosynthesis
  2. Decline in water use efficiency
  3. Increase growth and flowering in plants

  1. 1 only

  2. 2 only

  3. 3 only

  4. 1, 2 and 3
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Increased UV radiations result in reduced growth, photosynthesis and flowering as increased UV radiations (due to ozone depletion) would make it difficult for leaves of green plants to exchange gases with the atmosphere. Due to increased temperature consequent upon increased UV radiation, the evaporation rate of surface water will increase and soil moisture would decrease leading to drying of agricultural crops and hence reduced yield.

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