BIO 100 Exam 4 Study Guide
Questions And Actual Answers
2025\2026 Updated.
A series of reciprocal adaptations in predator and prey populations describes ________ -
Answer codependence or coevolution
A predator that has a long tail for maneuverability is adapted for what stage of predation? -
Answer Pursuing
The resemblance of a harmless fly to a bee is an example of ______ - Answer mimicry
The resemblance of the walking stick insect to a twig is an example of - Answer camouflage
What, if any, is the adaptive value to a foxglove plant of producing a chemical called digitalis? -
Answer digitalis serves as a defense against predation
What is a necessary ingredient for competition? - Answer limited resource
According to the competitive exclusion principle, two species cannot continue to occupy the
same - Answer ecological niche
If an overlap develops between the ranges of two species that occupy the same niche in the
zone of overlap, what will probably happen in the zone of overlap? - Answer one species will
take over most or all of the zone of overlap by using the resources more efficiently
A territory is most likely to be defended against - Answer individuals belonging to the same
species
The evolution of adaptations that enable similar species to coexist in a community is called -
Answer character divergence
A symbiotic relationship where both of the co-existing species benefit from the interaction is
called - Answer mutualism
, Parasites are different from predators in that - Answer parasites are less likely to kill their hosts
In tropical forests, there are plants known as ant-plants. These plants provide nesting places and
nectar to ants and the presence of the ants protects the ant-plants from predation by
herbivores. This interaction between the ants and the ant-plants is - Answer mutualism
A fungus and algae grow together to produce what we call a lichen. When investigators separate
out the fungus from the algae and try to grow them in the same habitat but each alone, they all
die. What hypothesis most logically explains this phenomenon? - Answer They both supply a
necessary factor for the other to survive
The extermination of gray wolves from Yellowstone National Park caused dramatic declines in
the populations of many other species. When wolves were reintroduced to the park 70 years
later, many of these species rebounded. This is evidence that gray wolves are - Answer a
keystone species
The first species to live on new land, such as that formed from volcanic lava, are called - Answer
a pioneer species
The removal of a keystone species from a community often results in - Answer a decrease in
biodiversity
Mosses growing on bare rock will eventually help to break the rock down to create soil which
can be colonized by other plants. These mosses are - Answer involved in primary succession
A pioneer plant should have - Answer thousands of small seeds
Where do you find the greatest species diversity in the world? - Answer At medium latitudes
A bird watcher is trying to increase the list of bird species she has seen in the world. There are
9234 species in the world, so where should this bird watcher concentrate her efforts to see the
greatest number of species in a lifetime? - Answer Tropical forest biome
When a species is endemic, it means that it is - Answer restricted to one location only
Questions And Actual Answers
2025\2026 Updated.
A series of reciprocal adaptations in predator and prey populations describes ________ -
Answer codependence or coevolution
A predator that has a long tail for maneuverability is adapted for what stage of predation? -
Answer Pursuing
The resemblance of a harmless fly to a bee is an example of ______ - Answer mimicry
The resemblance of the walking stick insect to a twig is an example of - Answer camouflage
What, if any, is the adaptive value to a foxglove plant of producing a chemical called digitalis? -
Answer digitalis serves as a defense against predation
What is a necessary ingredient for competition? - Answer limited resource
According to the competitive exclusion principle, two species cannot continue to occupy the
same - Answer ecological niche
If an overlap develops between the ranges of two species that occupy the same niche in the
zone of overlap, what will probably happen in the zone of overlap? - Answer one species will
take over most or all of the zone of overlap by using the resources more efficiently
A territory is most likely to be defended against - Answer individuals belonging to the same
species
The evolution of adaptations that enable similar species to coexist in a community is called -
Answer character divergence
A symbiotic relationship where both of the co-existing species benefit from the interaction is
called - Answer mutualism
, Parasites are different from predators in that - Answer parasites are less likely to kill their hosts
In tropical forests, there are plants known as ant-plants. These plants provide nesting places and
nectar to ants and the presence of the ants protects the ant-plants from predation by
herbivores. This interaction between the ants and the ant-plants is - Answer mutualism
A fungus and algae grow together to produce what we call a lichen. When investigators separate
out the fungus from the algae and try to grow them in the same habitat but each alone, they all
die. What hypothesis most logically explains this phenomenon? - Answer They both supply a
necessary factor for the other to survive
The extermination of gray wolves from Yellowstone National Park caused dramatic declines in
the populations of many other species. When wolves were reintroduced to the park 70 years
later, many of these species rebounded. This is evidence that gray wolves are - Answer a
keystone species
The first species to live on new land, such as that formed from volcanic lava, are called - Answer
a pioneer species
The removal of a keystone species from a community often results in - Answer a decrease in
biodiversity
Mosses growing on bare rock will eventually help to break the rock down to create soil which
can be colonized by other plants. These mosses are - Answer involved in primary succession
A pioneer plant should have - Answer thousands of small seeds
Where do you find the greatest species diversity in the world? - Answer At medium latitudes
A bird watcher is trying to increase the list of bird species she has seen in the world. There are
9234 species in the world, so where should this bird watcher concentrate her efforts to see the
greatest number of species in a lifetime? - Answer Tropical forest biome
When a species is endemic, it means that it is - Answer restricted to one location only
