Which of the following best describes the condition of a twig if the auxin produced by its apical meristem is conveyed equally down all sides?
A) It will elongate.
B) It will branch near its tip.
C) It will produce a flower.
D) It will bend to one side.
A
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The protrusible rasping organ in a mollusk's mouth that is used to scrape food from the substrate is:
A. a veliger B. a visceral mass C. composed of nacre D. a radula E. an ammonite
To reduce or eliminate disease-/spoilage-causing organisms, food is often subjected to
A. heat. B. chemical additives. C. radiation. D. cold. E. All of the choices are correct.
After eleven years, the descendants of transferred guppies in Venezuela and Trinidad were significantly larger than
their ancestors, indicating that the larger size of guppies was a(n) adaptation to the new environment. __________________ Indicate whether the statement is true or false.
Which of the following is acellular?
A. virus B. bacterium C. fungus D. protozoan