Differences in intensity of a stimulus
a. do not affect the impulse transmitted.
b. are indicated by the number of nerves activated.
c. control the part of the brain that receives the stimulus.
d. are encoded in the frequency of action potentials on a single axon.
e. are indicated by the number of nerves activated and are encoded in the frequency of action
potentials on a single axon.
E
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A male cricket creates sounds that we call "chirps" by rubbing one wing against the other. When is this considered an act of communication?
A. Every time the cricket produces a chirp regardless of whether the signal is received by an organism. B. Every time a member of its own species hears a chirp regardless of its response to the signal. C. Every time a female member of its species hears a chirp and changes her behavior in response to the signal. D. Every time the chirp is heard by some other organism that changes its behavior in response to the signal.
The pectoral girdle and the pelvic girdle differ in that ____
a. the pectoral girdle has more bones b. the pectoral girdle includes the patella and the pelvic girdle includes the radius c. the bones of the pelvic girdle are fused while the bones of the pectoral girdle are not d. the bones of the pelvic girdle are part of the upper body while the bones of the pectoral girdle are a part of the lower body e. the bones of the pelvic girdle contain more calcium
Total distance traveled by the time of travel
What will be an ideal response?
Defend the following statement: Vascular tissue was, arguably, the most important evolutionary step, making possible the kinds of plant life we see today
What will be an ideal response?