Which naturally-occurring plant hormone has a major role in the phototropic response of plants?

A. 2, 4-D
B. ethylene
C. gibberellin
D. abscisic acid
E. auxin


Answer: E

Biology & Microbiology

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The gametophyte generation of ferns is called the:a

prothallus. b. protonema. c. gemma. d. thallus. e. fiddlehead.

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What term is used to express the idea that several genes exert influence over the same characteristic?

A) terminal interaction B) gene interaction C) transformation D) co-adhesion E) coextension

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Active immunity develops only after a natural infection and not after vaccination

Indicate whether this statement is true or false.

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