Plants are a:

a. polyphyletic group.
b. monophyletic group.
c. group without a common ancestor.
d. group with many ancestors.
e. paraphyletic group.


B

Biology & Microbiology

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The protective membranes that surround the brain and spinal cord are called the

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Which bacterium is capable of withstanding doses of radiation that are several times higher than human cells can tolerate?

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Which method of transport is responsible for low concentrations of sodium and high concentrations of potassium within the cells of the body?

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