A directional adjustment of growth in response to environmental stimuli is called ____

a. circadian rhythm
b. vernalization
c. photoperiodism
d. statolith
e. tropism


ANSWER: e

Biology & Microbiology

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Members of this Ecdysozoan phylum include many important decomposers, but also many damaging

parasites. Many parasitize the roots of plants, while others cause disease in animals. More than 1 billion people worldwide are estimated to be infected by members of this group such as pinworms, trichinas, and filarial worms.

a. Arthropoda b. Onychophora c. Nemertea d. Annelida e. Nematoda

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The movement of sugars and other organic molecules through phloem is called __________. Fill in the blank(s) with the appropriate word(s)

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The point at which a nerve impulse is initiated is the ____

a. initiation threshold b. initiation potential c. action potential d. graded potential e. threshold potential

Biology & Microbiology

Chemical reactions may ______ energy.

a. absorb b. release c. require d. all of the above

Biology & Microbiology