What regulates the flow of water through the xylem?

a) the number of companion cells in the phloem
b) passive transport by the endodermis
c) the evaporation of water from the leaves
d) active transport by sieve-tube members
e) active transport by tracheid and vessel elements.


Ans: c) the evaporation of water from the leaves

Biology & Microbiology

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__________________ Indicate whether the statement is true or false.

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Which of the following can be used to distinguish between a bacterial cell and an archael cell?

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Eukaryotic organisms speed up the process of DNA replication by

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Biology & Microbiology