Which of the following hormones results in the production of more neurons in the higher vocal center

of the brains of male, but not female, zebra finches?



a. testosterone
b. estrogen
c. follicle-stimulating hormone
d. epinephrine
e. cortisol


B

Biology & Microbiology

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Which type of plant hormone is primarily responsible for the bending of a plant shoot toward light?

a. auxins b. ethylene c. systemin d. salicylic acid e. brassinosteroids

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The distribution of highly competitive animals is

likely to be a. clumped. b. random. c. uniform. d. constant. e. homogeneous.

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Although artificial selection may seem slow and unreliable, ____________________ observed that after only a few

generations, breeders produced many varieties of pigeons and minks Fill in the blank(s) with the appropriate word(s).

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The ultimate source of carbon from which life is constructed is derived from

A) atmospheric carbon dioxide. B) respiration. C) decomposition. D) the consumption of other organisms.

Biology & Microbiology