NEET BIOLOGY

Detailed explanation-1: -The best wavelengths of visible light for photosynthesis fall within the blue range (425–450 nm) and red range (600–700 nm). Therefore, the best light sources for photosynthesis should ideally emit light in the blue and red ranges.

Detailed explanation-2: -Plants require blue and red light, which are not a part of the UV color spectrum. Blue light encourages chlorophyll production, which helps the plants create strong and healthy stems and leaves. Red light helps during the early stages of a plant’s life, assisting with seed germination, bulb development and root growth.

Detailed explanation-3: -Plants use light for both photosynthesis and to respond to the environment to optimize their growth. Light can be described as the visible portion of the electromagnetic spectrum which extends from about 380 to about 770 nanometers.

Detailed explanation-4: -Because red light has the highest absorption by chlorophyll, it is the most effective wavelength for photosynthesis. In photosynthesis, green light is the least effective.