PrepTest 89, Section 2, Question 26
The three-spine stickleback is a small fish that lives both in oceans and in freshwater lakes. While ocean stickleback are covered with armor to protect them from their predators, lake stickleback have virtually no armor. Since armor limits the speed of a stickleback's growth, this indicates that having a larger size is a better defense against the lake stickleback's predators than having armor.
The three-spine stickleback is a small fish that lives both in oceans and in freshwater lakes. While ocean stickleback are covered with armor to protect them from their predators, lake stickleback have virtually no armor. Since armor limits the speed of a stickleback's growth, this indicates that having a larger size is a better defense against the lake stickleback's predators than having armor.
The three-spine stickleback is a small fish that lives both in oceans and in freshwater lakes. While ocean stickleback are covered with armor to protect them from their predators, lake stickleback have virtually no armor. Since armor limits the speed of a stickleback's growth, this indicates that having a larger size is a better defense against the lake stickleback's predators than having armor.
The three-spine stickleback is a small fish that lives both in oceans and in freshwater lakes. While ocean stickleback are covered with armor to protect them from their predators, lake stickleback have virtually no armor. Since armor limits the speed of a stickleback's growth, this indicates that having a larger size is a better defense against the lake stickleback's predators than having armor.
Which one of the following, if true, weakens the argument?
Sticklebacks with armor are unable to swim as fast, making them most vulnerable to fast-moving predators.
Having a larger size is an important factor in whether lake stickleback, but not ocean stickleback, survive cold winters.
Unlike ocean stickleback, the lake stickleback are more often preyed upon by predatory insects than by larger fish.
Both ocean stickleback and lake stickleback feed primarily on the same types of foods.
Sticklebacks originated in the ocean but began populating freshwater lakes and streams following the last ice age.
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