A marine fish with a cold body temperature that matches its cold surroundings is an example of
A. regulating.
B. conforming.
C. conditioning.
D. negative feedback.
Answer: B
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Earthworms, grasshoppers, and birds all have an expanded region of the gut associated with the temporary storage of food, which is called the _____
A) gastric cecae B) larynx C) crop D) pharynx E) epiglottis
Gravity-sensing mechanisms of many
organisms are based on a. spicules. b. statoliths. c. uric acid crystals. d. sclereids. e. nematocysts
Small, nonterritorial male marine iguanas typically have their mating interrupted by larger males prior to ejaculation. What alternative mating strategy have these small males developed to compensate for this?
A) Small males form coalitions and distract larger males to allow enough time for copulation. B) Small males induce ejaculation prior to copulation, and store the ejaculate in their cloacal pouches. C) Small males have developed the ability to induce ejaculation much more quickly than large males. D) Small males have developed sperm that are more efficient at fertilization than the sperm of larger males.
Studying pedigrees enables human geneticists to predict how traits that are determined by phenotype
are inherited. _________________ Indicate whether the statement is true or false.