The common garter snake is a predator of the rough-skinned newt. These newts produce a

potent neurotoxin that is concentrated in their skin, but garter snakes have evolved resistance
to this toxin.


This is an example of __________.

a. natural selection
b. sexual selection
c. coevolution
d. natural selection and coevolution


D

Biology & Microbiology

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Which of the following characters are considered analogous?

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Which of these is not a possible function of trichomes?  

A.  reflect light from leaf surfaces B.  store or secrete salt C.  defend against insects D.  structural support E.  irritate potential herbivores

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Motor neurons release the neurotransmitter acetylcholine (ACh) and acetylcholinesterase degrades ACh in the synapse

If a neurophysiologist applies onchidal (a naturally occurring acetylcholinesterase inhibitor produced by the mollusc Onchidella binneyi) to a synapse, what would you expect to happen? A) paralysis of muscle tissue B) convulsions due to constant muscle stimulation C) decrease in the frequency of action potentials D) no effect

Biology & Microbiology

The strength of selection for a color pattern is greater in snakes that flee by turning than in snakes that flee straight.

a. true b. false

Biology & Microbiology