The plant hormone ____ is primarily responsible for the growth of a floral stalk in rosette plants such as cabbages

a. salicylic acid
b. cytokinins
c. ethylene
d. gibberellin
e. brassinosteroid


ANSWER: d

Biology & Microbiology

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Fossil evidence from five continents exists for 100 extinct, and one extant, species of ____

a. humans b. birds c. trilobites d. insects e. horses

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A reflex pathway is the simplest pathway

because it a. involves only one synapse. b. is evaluated and integrated by the medulla, not the cerebrum. c. involves only two or three neurons. d. does not involve the central nervous system in any way. e. includes all of these

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The greatest amount of kinetic energy is found in 

A. gases. B. liquids. C. solids. D. colloids.

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A bundle of muscle cells is called a(n) ________

Fill in the blank(s) with correct word

Biology & Microbiology