Respond to the following statements in reference to the five kinds of behavior listed below.
A. If the young of precocial (young that are relatively mature and mobile when hatched) birds (e.g., chickens or ducks) are continually shown a large moving object during the first few days of their lives, they will follow that object. This is an example of __________.
B. The extreme variation in plumage observed among the males of various species of ducks is thought to be due to __________.
C. A garter snake avoids dangerous or unpalatable prey. This is an example of __________.
D. Instinctive responses are advantageous when the __________ consistently signals the same situation.
E. Pigeons and squirrels that live in cities do not flee approaching humans due to this type of learned behavior.
A. Imprinting
B. Sexual selection
C. Learned behavior
D. Triggering stimulus
E. Habituation
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What conclusion can you draw from the figure above?
A) Without direct contact, mussels can sense the presence of crabs. B) Mussels can sense the presence of crabs only visually. C) Mussels are increasing their shell thickness in response to water current. D) Shell thickness is a non-inducible defense. E) Crabs hunt for mussels by focusing on the chemicals they emit into the water.
A polypeptide chain is composed of:
a. amino acids b. proteins c. nucleic acids d. fatty acids e. monosaccharides
Why is pollen considered an important adaptation to land?
What will be an ideal response?
Cleavage is indicated by
a. A. b. B. c. C. d. D. e. E.