Action Spectrum

Q. In the higher plants, which region of visible light shows maximum absorption by carotenoids?

1. Violet and blue
2. Green and red
3. Blue and green
4. Red and violet

Q. In the higher plants, which region of visible light shows maximum absorption by carotenoids?

1. Violet and blue
2. Green and red
3. Red and violet
4. Blue and green

Q. Green light has a wavelength of

1. 400 – 450 nm
2. 500 − 580 nm
3. 660 – 720 nm
4. 720 − 800 nm

Q. Photosynthetically Active Radiation (PAR) has the following range of wavelengths

1. 340-450 nm
2. 400-700 nm
3. 500-600 nm
4. 450-950 nm