The green plants in a terrestrial eco- system absorbs sunlight that fa

by

The green plants in a terrestrial eco- system absorbs sunlight that falls on their leaves and convert it into food energy. The percentage of solar radia- tion absorbed by all green plants for the process of photosynthesis is about

1%
5%
8%
10%
This question was previously asked in
UPSC NDA-2 – 2023
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The percentage of solar radiation absorbed by all green plants for the process of photosynthesis is about 1%.
Ecological studies show that only a small fraction of the total solar energy incident on the Earth’s surface is captured by producers (green plants) and converted into chemical energy through photosynthesis. This efficiency is typically stated as being around 1%. This absorbed energy forms the base of most ecosystems, supporting all subsequent trophic levels.
While plants absorb some portion of the sunlight (especially in the red and blue wavelengths), much of the incident light is reflected or transmitted. Furthermore, not all absorbed energy is converted into biomass; a significant portion is lost as heat or used by the plant for its own metabolic processes (respiration). The 1% value refers to the efficiency of conversion of incident solar energy into net primary production.

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