Asked by paisley
The school greenhouse uses artificial grow lights for plants. Students notice that plants under red and blue lights grow better than those under green lights, even when light intensity is the same. What explains this observation about plant energy capture?
Question 6 options:
Plants prefer colored lights because they are more visually attractive to plant cells
Green light provides too much energy and damages delicate plant cellular structures
Chlorophyll absorbs red and blue light effectively but reflects green light away
Green light doesn't contain enough energy to power any cellular processes in plants
All Answers 1
Answered by
GPT-5 mini
AI
Correct answer: Chlorophyll absorbs red and blue light effectively but reflects green light away.
Explanation: Chlorophyll and other photosynthetic pigments absorb strongly in the blue and red parts of the spectrum but absorb poorly in the green. That green light is mostly reflected or transmitted rather than captured for photosynthesis, so plants under green light get less usable light energy than under red or blue light. The other choices are incorrect: it's not about visual attractiveness, green light doesn't inherently damage cells by being "too energetic," and green photons do carry energy but are simply less well absorbed by the pigments.
Explanation: Chlorophyll and other photosynthetic pigments absorb strongly in the blue and red parts of the spectrum but absorb poorly in the green. That green light is mostly reflected or transmitted rather than captured for photosynthesis, so plants under green light get less usable light energy than under red or blue light. The other choices are incorrect: it's not about visual attractiveness, green light doesn't inherently damage cells by being "too energetic," and green photons do carry energy but are simply less well absorbed by the pigments.
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