Photosynthesis Question 20
20. Most plants are green in colour because
[1997]
(a) the atmosphere filters out all the colours of the visible light spectrum except green
(b) green light is the most effective wavelength region of the visible spectrum in sunlight for photosynthesis
(c) chlorophyll is least effective in absorbing green light
(d) greenlightallows maximumphotosynthesis
Show Answer
Answer : c
Hints & Solution
(c) Plants are green because their cells contain chloroplasts which contains the pigment chlorophyll which absorbs deep-blue and red light, so that the rest of the sunlight spectrum is being reflected, causing the plant to look green.
