When geese or ducks are imprinted, this means that they ____
a. will return to the place they were born to breed and raise their own young
b. have become habituated to harmless stimuli
c. have been experimentally trained by operant conditioning
d. learned the features of a suitable mate during a critical period
e. have two nonfunctional copies of a particular gene
D
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The adrenal cortex produces ____ to trigger increased Na+ reabsorption in the kidneys
a. atrial natriuretic factor b. renin c. aldosterone d. antidiuretic hormone e. angiotensin
Which of the following is an incorrect match?
a. pea pods; dehiscent b. strawberry; berry c. cherry; drupe d. corn; indehiscent e. tomato; berry
We can see only a small portion of the entire electromagnetic spectrum.
a. true b. false
The nonliving components of an environment, such as weather and water availability, are
A) biotic components. B) abiotic components. C) genotypes. D) alleles. E) phenotypes.