CAMPBELL BIOLOGY IN FOCUS 4TH EDITION
BY LISA A. URRY EXAM 2026 PRACTICE EXAM
SET WITH 100% CORRECT SOLVED
QUESTIONS
◉ The symbiotic relationship between cattle egrets and cape buffalo
is an example of Answer: Commensalism
◉ The way in which an organism utilizes its environment may be
called Answer: Its niche
◉ There are more species in tropical areas than in places more
distant from the equator. This is probably a result of Answer: More
intense annual solar radiation
◉ These species avoid competition by living in different portions of
the habitat or by utilizing different food or other resources and are
called _______ species. Answer: Sympatric
◉ Two or more unrelated but protected species resemble one
another, having bright colors, thus achieving a kind of group defense.
This phenomenon of similar coloration is called Answer: Mullerian
mimicry
, ◉ Which of the following best describes resource partitioning?
Answer: Slight variations in niche that allow similar species to
coexist
◉ Which of the following best describes the consequences of white-
band disease in Caribbean coral reefs? Answer: Algal species take
the place of the dead coral, and the fish community is dominated by
herbivores
◉ Which of the following is a correct statement about the
McArthur/Wilson Island Equilibrium Model? Answer: Small islands
receive few new immigrant species
◉ Which of the following is a likely explanation for why invasive
species take over communities into which they have been
introduced? Answer: Invasive species are not held in check by the
predators and agents of disease that have always been in place for
native species
◉ Which of the following is an example of aposematic coloration?
Answer: Stripes on a skunk
◉ Which of the following is an example of Batesian mimicry?
Answer: A nonvenomous snake resembling a venomous snake
BY LISA A. URRY EXAM 2026 PRACTICE EXAM
SET WITH 100% CORRECT SOLVED
QUESTIONS
◉ The symbiotic relationship between cattle egrets and cape buffalo
is an example of Answer: Commensalism
◉ The way in which an organism utilizes its environment may be
called Answer: Its niche
◉ There are more species in tropical areas than in places more
distant from the equator. This is probably a result of Answer: More
intense annual solar radiation
◉ These species avoid competition by living in different portions of
the habitat or by utilizing different food or other resources and are
called _______ species. Answer: Sympatric
◉ Two or more unrelated but protected species resemble one
another, having bright colors, thus achieving a kind of group defense.
This phenomenon of similar coloration is called Answer: Mullerian
mimicry
, ◉ Which of the following best describes resource partitioning?
Answer: Slight variations in niche that allow similar species to
coexist
◉ Which of the following best describes the consequences of white-
band disease in Caribbean coral reefs? Answer: Algal species take
the place of the dead coral, and the fish community is dominated by
herbivores
◉ Which of the following is a correct statement about the
McArthur/Wilson Island Equilibrium Model? Answer: Small islands
receive few new immigrant species
◉ Which of the following is a likely explanation for why invasive
species take over communities into which they have been
introduced? Answer: Invasive species are not held in check by the
predators and agents of disease that have always been in place for
native species
◉ Which of the following is an example of aposematic coloration?
Answer: Stripes on a skunk
◉ Which of the following is an example of Batesian mimicry?
Answer: A nonvenomous snake resembling a venomous snake
