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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Active immunity develops only after a natural infection and not after vaccination
Indicate whether this statement is true or false.
Biology & Microbiology
Which of the following will eventually
produce a female gametophyte?
a. megaspore b. microsporangium c. microspore d. megasporangium e. female gametes
Biology & Microbiology
The gametophyte generation of ferns is called the:a
prothallus. b. protonema. c. gemma. d. thallus. e. fiddlehead.
Biology & Microbiology
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
Biology & Microbiology