NEET BIOLOGY

Detailed explanation-1: -(a) The curve showing the amount of absorption of different wavelengths of light by a photosynthetic pigment is called the absorption spectrum .

Detailed explanation-2: -The graphical curve showing the amount of energy of different wavelength of light absorbed by a pigment is called absorption spectrum. It is studied with the help of spectrophotometer.

Detailed explanation-3: -So in conclusion, for photosynthesis, the most effective and efficient light is in the red region (600-700 nm), followed by the blue (400-500 nm) and then the green (500-600 nm). These blue, green, and red wavelengths (400-700 nm), are all recognized as photosynthetically active and are used by plants.

Detailed explanation-4: -Biomass and photosynthetic parameters increased with an increasing light intensity under blue LED illumination and decreased when illuminated with red and green LEDs with decreased light intensity.