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Q. Approximately how much of the solar energy that falls on the leaves of a plant is converted to chemical energy by photosynthesis?

Ecosystem

Solution:

$50\%$ of the solar energy incident over earth is present in $PAR$ (photosynthetically active radiation). About $1-5\%$ of total incident solar energy or $2-10\%$ of $PAR$ is captured by the photosynthetic organisms for photosynthesis.