What is the atmospheric concentration of carbon dioxide?(a) 0.3 – 0.4%(b) 3 – 4%(c) 0.03 – 0.04%(d) 0.003 – 0.004%I had been asked this question by my college professor while I was bunking the class.This question is from Factors Affecting Photosynthesis in division Photosynthesis in Higher Plants of Biology – Class 11

What is the atmospheric concentration of carbon dioxide?(a) 0.3 – 0.

1.	What is the atmospheric concentration of carbon dioxide?(a) 0.3 – 0.4%(b) 3 – 4%(c) 0.03 – 0.04%(d) 0.003 – 0.004%I had been asked this question by my college professor while I was bunking the class.This question is from Factors Affecting Photosynthesis in division Photosynthesis in Higher Plants of Biology – Class 11
Answer» Right option is (c) 0.03 – 0.04% The best I can explain: The atmospheric CONCENTRATION of CARBON dioxide is 0.03 – 0.04%. Carbon dioxide concentration is an important EXTERNAL FACTOR that affects the rate of photosynthesis in all plants.

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