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12 Sep 2023, 07:37
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Pit vipers are so called because of the small pits on the sides of their heads which function as infrared sensors, giving the viper a thermal impression of objects in its vicinity. Because all species of pit vipers are predators, scientists have long thought that these sensors were used to find prey. One researcher has hypothesized, however, that the infrared sensor serves primarily to assist the viper in judging the size of approaching predators and how far away they are.
Which one of the following, if true, would most support the researcher’s hypothesis?
(A) Pit vipers of both sexes have infrared sensors, and both sexes exhibit aggressive and defensive behaviors.
(B) Pit vipers do not differ in their predatory behavior from closely related vipers without pits, but they do differ markedly from these other species in their strategies of defense against predators.
(C) Pit vipers are distinguishable from other viper species not only by their pits but also by the chemical composition of their venom.
(D) Pit vipers have a well-developed sense of smell that they use to supplement the thermal impressions they receive from their infrared sensors.
(E) The rattle of the diamondback rattlesnake, one of the most common kinds of pit viper, functions as a defense mechanism to intimidate predators.
Which one of the following, if true, would most support the researcher’s hypothesis?
(A) Pit vipers of both sexes have infrared sensors, and both sexes exhibit aggressive and defensive behaviors.
(B) Pit vipers do not differ in their predatory behavior from closely related vipers without pits, but they do differ markedly from these other species in their strategies of defense against predators.
(C) Pit vipers are distinguishable from other viper species not only by their pits but also by the chemical composition of their venom.
(D) Pit vipers have a well-developed sense of smell that they use to supplement the thermal impressions they receive from their infrared sensors.
(E) The rattle of the diamondback rattlesnake, one of the most common kinds of pit viper, functions as a defense mechanism to intimidate predators.
12 Sep 2023, 08:48
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To support the researcher's hypothesis that the infrared sensors in pit vipers primarily assist them in judging the size of approaching predators and how far away they are, we would need information that links the pit viper's behavior to this function.
Option (B) seems to provide the most relevant support for the hypothesis because it suggests that pit vipers differ from closely related vipers without pits in their strategies of defense against predators. This difference in defense strategies could indicate that pit vipers rely on their infrared sensors to assess the size and proximity of approaching predators and adjust their defensive behaviors accordingly.
Option (A) mentions the presence of infrared sensors in both sexes and aggressive/defensive behaviors but does not specifically address how these sensors are used in response to approaching predators.
Option (C) discusses the chemical composition of venom, which is not directly related to the hypothesis about the function of infrared sensors.
Option (D) talks about the sense of smell, but it does not provide direct support for the hypothesis regarding the use of infrared sensors to judge the size and proximity of predators.
Option (E) discusses the defensive mechanism of a specific pit viper, but it does not provide information about the general function of the infrared sensors in all pit vipers.
So, option (B) is the most appropriate choice to support the researcher's hypothesis.
Option (B) seems to provide the most relevant support for the hypothesis because it suggests that pit vipers differ from closely related vipers without pits in their strategies of defense against predators. This difference in defense strategies could indicate that pit vipers rely on their infrared sensors to assess the size and proximity of approaching predators and adjust their defensive behaviors accordingly.
Option (A) mentions the presence of infrared sensors in both sexes and aggressive/defensive behaviors but does not specifically address how these sensors are used in response to approaching predators.
Option (C) discusses the chemical composition of venom, which is not directly related to the hypothesis about the function of infrared sensors.
Option (D) talks about the sense of smell, but it does not provide direct support for the hypothesis regarding the use of infrared sensors to judge the size and proximity of predators.
Option (E) discusses the defensive mechanism of a specific pit viper, but it does not provide information about the general function of the infrared sensors in all pit vipers.
So, option (B) is the most appropriate choice to support the researcher's hypothesis.
25 Feb 2026, 22:42
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