PCB 3043 Chapter 14 Exam Questions
and Answers Graded A+
A plant species has defenses that make it unpalatable to most herbivores. A
generalist herbivore eats a variety of other plants and seldom eats this plant. A
specialist herbivore eats only the well-defended plant species.
How might the abundance of the well-defended plant be affected differently by the
generalist herbivore and by the specialist herbivore?
-The specialist herbivore may increase the abundance of the well-defended plant
by chasing other herbivores away from the plants.
-The generalist herbivore may decrease the abundance of the well-defended plant if
it eats the plant's competitors.
-The generalist herbivore may increase the abundance of the well-defended plant
by choosing to eat other plant species.
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, -The specialist herbivore may decrease the abundance of the well-defended plant
by feeding exclusively on that species. - Correct answer--The generalist herbivore
may increase the abundance of the well-defended plant by choosing to eat other
plant species.
-The specialist herbivore may decrease the abundance of the well-defended plant
by feeding exclusively on that species.
Carl Huffaker conducted an experiment using oranges and two species of mites, a
prey species that eats the oranges and a predator species that eats the prey species.
This work demonstrates that predator and prey populations can persist in nature
when _____________________________. - Correct answer-Carl Huffaker
conducted an experiment using oranges and two species of mites, a prey species
that eats the oranges and a predator species that eats the prey species. This work
demonstrates that predator and prey populations can persist in nature when PREY
DISPERSE MORE EASILY THAN PREDATORS.
Why does an invasive species often have harmful effects on native species?
-Humans cannot correct the negative effects that an invasive species has on the
fitness of native species.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
and Answers Graded A+
A plant species has defenses that make it unpalatable to most herbivores. A
generalist herbivore eats a variety of other plants and seldom eats this plant. A
specialist herbivore eats only the well-defended plant species.
How might the abundance of the well-defended plant be affected differently by the
generalist herbivore and by the specialist herbivore?
-The specialist herbivore may increase the abundance of the well-defended plant
by chasing other herbivores away from the plants.
-The generalist herbivore may decrease the abundance of the well-defended plant if
it eats the plant's competitors.
-The generalist herbivore may increase the abundance of the well-defended plant
by choosing to eat other plant species.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 1
, -The specialist herbivore may decrease the abundance of the well-defended plant
by feeding exclusively on that species. - Correct answer--The generalist herbivore
may increase the abundance of the well-defended plant by choosing to eat other
plant species.
-The specialist herbivore may decrease the abundance of the well-defended plant
by feeding exclusively on that species.
Carl Huffaker conducted an experiment using oranges and two species of mites, a
prey species that eats the oranges and a predator species that eats the prey species.
This work demonstrates that predator and prey populations can persist in nature
when _____________________________. - Correct answer-Carl Huffaker
conducted an experiment using oranges and two species of mites, a prey species
that eats the oranges and a predator species that eats the prey species. This work
demonstrates that predator and prey populations can persist in nature when PREY
DISPERSE MORE EASILY THAN PREDATORS.
Why does an invasive species often have harmful effects on native species?
-Humans cannot correct the negative effects that an invasive species has on the
fitness of native species.
©COPYRIGHT 2025, ALL RIGHTS RESERVED 2
