Most organic matter found in soils results from primary producers such as ________.

A. photosynthetic protists
B. vascular plants
C. cyanobacteria
D. None of the choices are correct.


Answer: B

Biology & Microbiology

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What functions as the supportive component of the skeleton in an animal with a hydrostatic skeleton?

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Which groups of plants have at least some members that possess tissues capable of transporting water and nutrients?

_____ spermatophytes. _____ lycophytes. _____ bryophytes. _____ tracheophytes. _____ embryophytes.

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If a toxin blocks the receptors for the neurotransmitter on the postsynaptic muscle cell,

____________________.

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Moistening and lubrication of food occurs in the

human a. mouth. b. esophagus. c. stomach. d. duodenum. e. jejunum.

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