What mechanism best explains how xylem sap moves up against the downward pull of gravity?
A) cohesion-tension hypothesis
B) gravitropism
C) phototropism
D) expenditure of ATP
Correct Answer:
Verified
Q4: What converts atmospheric nitrogen to ammonium?
A)nitrifying bacteria
B)nitrogen-fixing
Q5: What does a plant gain from a
Q6: What is the conversion that occurs during
Q7: What best describes the opening and closing
Q8: What best describes the mechanism that causes
Q10: For a plant, carbon and nitrogen are
Q11: What is an example of a plant
Q12: Substances that enter a plant through the
Q13: What converts soil ammonium to nitrate?
A)nitrifying bacteria
B)ammonifying
Q14: A typical plant obtains both water and
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