Biology Study Set 5
Quiz 8 :
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Q19 Q19 Q19
Jan Baptista van Helmont did an important experiment related to photosynthesis.He weighed a small willow tree and a pot of soil.Jan then planted the tree in the pot.Over the course of five years, he added only water to the pot.At the end of five years, he weighed the tree and found that it had gained 74.4 kg.He weighed the soil, and it was only 57 g less.What do the results of this specific experiment demonstrate about what is needed for a plant to grow and increase its mass?
Q52 Q52 Q52
Based on a variety of experiments, it is known that the rate of photosynthesis is highest when wavelengths of light between 400 and 500 nm are used, and when wavelengths around 700 nm are used.What does this indicate about the relative importance of chlorophyll a and b in photosynthesis?