Solution: The wavelength of sunlight or solar energy that reaches the earth ranges from 300 nm (in the ultra-violet range) to 2600 nm (in the infra-red range). Photo synthetically active radiation is a part of the spectrum employed in photosynthesis with a wavelength of 400-700 nm (PAR). So, the correct answer is (c).
Which range of wavelength (in nm) is called photosynthetically active radiation (PAR)?
a. 100 – 390
b. 390 – 430
c. 400 – 700
d. 760 – 100,00
a. 100 – 390
b. 390 – 430
c. 400 – 700
d. 760 – 100,00
Which range of wavelength (in nm) is called photosynthetically active radiation (PAR)?
a. 100 – 390
b. 390 – 430
c. 400 – 700
d. 760 – 100,00
a. 100 – 390
b. 390 – 430
c. 400 – 700
d. 760 – 100,00