Four of the five animals listed below have a
relationship in common. Select the exception.
a. crabs
b. shrimps
c. lobsters
d. centipedes
e. barnacles
Answer: d
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Which system is considered an open system?
a. a human b. a thermos c. a wine keg d. a greenhouse e. the Earth
Glucose is the only sugar produced from photosynthesis
Indicate whether the statement is true or false.
Behavioral traits are useful in distinguishing among species because
a. behaviors are always genetically determined. b. courtship behaviors and timing of mating may create prezygotic isolation. c. behaviors are easy to assess in dead and fossilized specimens. d. behaviors are independent of morphological characteristics. e. behaviors are always learned
Which of the following statements is false?
1.Neurons in the brain can interpret incoming action potentials only in certain ways. 2.Optic nerve impulses can only be interpreted as light. 3.Some sensory receptors do not convert a stimulus to nerve impulses. 4.The stronger the stimulus, the more action potentials are generated. 5.A strong stimulus activates many adjacent receptors, thereby increasing the number of action potentials and the level of awareness of the stimulus.