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27/09/2020 12:34 pm
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How many portions of the Photosynthetically Active Radiation (PAR) is captured by the plants?
(a) 5 – 10%
(b) 7 – 10%
(c) 8 – 10%
(d) 2 – 10%
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27/09/2020 12:36 pm
(d) 2 – 10%
Explanation:
The main source of energy for an ecosystem is the radiant energy or light energy derived from the sun. 50% of the total solar radiation that falls on earth is Photosynthetically Active Radiation (PAR).
The light energy is converted into chemical energy in the form of sugar by photosynthesis.
6H2O + 6CO2 + Light → 6C6H12O6+ 6O2 Plants utilize 2-10% of PAR in photosynthesis.