Parenting behavior is rare once the eggs have

hatched or birth has occurred in
a. birds.
b. amphibians.
c. mammals.
d. reptiles.
e. amphibians and reptiles.


Answer: d

Biology & Microbiology

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Homologous structures among major groups of organisms may differ in _____

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Hooker’s evening primrose keeps its flowers

closed until the early evening when they open. This is an example of

a. phototropism. b. vernalization. c. a circadian rhythm. d. photoperiodism. e. apical dominance

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A sheepherder has a large black and necrotic lesion (eschar) under his chin that has grown quickly in size. There is no pus, but the patient complains of painful and swollen glands. A gram-positive bacillus is isolated from the lesion. Which of the following features of the responsible agent is NOT a virulent Factor?

A. capsule B. endotoxin C. Lethal toxins D. Spore formation

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A plant hormone may have different effects on target cells due to any of the following except ____________.

A. differences in location relative to the ground B. the integration of several hormonal signals in the tissue C. the action of a cell’s hormone receptors upon binding to the hormone D. different gene expression patterns triggered by the hormone E. the concentration of the hormone in the tissue

Biology & Microbiology