Which colour of light is absorbed least by chlorophyll?
ARed light, used most efficiently
BGreen light, which is mostly reflected
CBlue light, used most efficiently
DViolet light, used most efficiently
Answer & Solution
Correct answer: B. Green light, which is mostly reflected
1. Chlorophyll absorbs red and blue strongly.
2. Green light is largely reflected and transmitted.
3. The reflection is why leaves look green.
4. So green is the least absorbed colour.
_Source: Selina Concise Biology Class 10, Ch on Photosynthesis (Mistral OCR'd PDF), section on absorption spectrum_
Related questions
A variegated leaf shows starch only in the green parts becauseIodine is used in the starch test because in presence of starch itBesides light and CO2, what factor can slow photosynthesis if too low?In the Calvin cycle the immediate carbon-acceptor isAn aquatic plant in bright light produces visible bubbles. This provesWhy is photosynthesis the basis of food chains?Beyond the saturation point of light intensity, photosynthesisWhich two molecules link the light reaction to the dark reaction?