NEET BIOLOGY

Detailed explanation-1: -Generally, blue light suppresses extension growth; plants grown with blue light are usually shorter and have smaller, thicker and darker green leaves compared to plants grown without blue light (Figure 1).

Detailed explanation-2: -The effect of blue light on plants is directly related to chlorophyll production. Plants that receive plenty of blue light will have strong, healthy stems and leaves. Indoor foliage plants benefit from having 12 hours of light per day.

Detailed explanation-3: -Blue Light Spectrum (400–500 nm) Blue light spectrum is widely responsible for increasing plant quality – especially in leafy crops. It promotes the stomatal opening – which allows more CO2 to enter the leaves. Blue light drives peak chlorophyll pigment absorption which is needed for photosynthesis.

Detailed explanation-4: -Blue light is mostly responsible for plant growth in the early stages. This is because blue light helps plants to synthesize chlorophyll pigment. This pigment mainly captures blue light of the visible spectrum and initiate the photosynthesis process.

Detailed explanation-5: -Plants also have a light-sensing system, which can respond to different times of day and seasonal changes. This can determine fruit maturation and changing colour in the leaves etc. For plants, blue light has a revitalizing (instead of drowsy) effect.