Which of the following communication signals matches the animal?

A. Chemical; honeybees
B. Tactile; frogs
C. Auditory; baboons
D. Visual; frogs
E. Chemical; fireflies


Answer: A

Biology & Microbiology

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Which of the following is an amine hormone important in the stress response in vertebrates?

A. dopamine B. melatonin C. cortisol D. epinephrine E. serotonin

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Anchorage dependence of animal cells in vitro or in vivo depends on which of the following?

A) attachment of spindle fibers to centrioles B) response of the cell cycle controls to signals from the plasma membrane C) the binding of cell-surface phospholipids to those of adjoining cells D) response of the cell cycle controls to the binding of cell-surface phospholipids

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Which of the following conducting cells are associated with xylem?

A. sieve-tube members & vessel elements B. vessel elements & companion cells C. tracheids & sieve-tube members D. tracheids & vessel elements E. sieve-tube members & companion cells

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To cross-fertilize flowers A and B, one would first remove flower A's immature ________ and later transfer pollen from flower B to flower A's ________

A) carpe; ovule B) anthers; stamen C) stamens; stigma D) stigma; style

Biology & Microbiology