Select the plant behavior that arises from internal stimuli.

A. thigmotropism
B. phototropism
C. nondevelopmental formation of aerenchyma
D. cytokinins promoting cell division


Answer: D

Biology & Microbiology

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Answer the following statement true (T) or false (F)

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What type of mollusk has a closed circulatory system? 

A. clam B. snail C. squid D. slug E. scallop

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Sudan IV, a dye that binds to nonpolar molecules, is used to detect the presence of macromolecules in food. Sudan IV would test positive in the presence of what macromolecule?

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