Where do plants get most of their mass?
A) from nitrogen in the atmosphere
B) from carbon dioxide in the atmosphere
C) from water, as van Helmont predicted
D) from organic molecules taken up from the soil
Correct Answer:
Verified
Q2: Under which weather condition would transpiration be
Q3: How do mineral ions get into the
Q4: Generally speaking, fluids in plants are
A) pushed
Q5: A hot, dry summer will reduce crop
Q6: If a plant is kept in the
Q8: _ increase the surface area of roots.
A)
Q9: The water pressure gradient in phloem tubes
Q10: What force is responsible for the cohesiveness
Q11: _ pulls water through a plant.
A) Transpiration
B)
Q12: The pores that facilitate gas exchange in
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