Plants capture only ____ of the photosynthetically active radiation (PAR) and this small amount of energy sustains the entire living world.
Answer & explanation
Correct answer: option 3
The correct answer is Option (3) → 2-10 percent
Photosynthetically active radiation (PAR) is the part of sunlight that plants can use for photosynthesis. Most of the PAR that falls on a leaf is reflected, passes through it or is lost as heat. Only a small part is fixed as chemical energy in food, and every food chain on Earth runs on that small part. The other ranges given in the options do not match the figure in NCERT.
NCERT Extract:
Energy Flow –
