Biology Chapter 38 Questions with accurate
answers
A close and often lifelong ecological relationship between species is
called Ans✓✓✓ a symbiosis.
A community consists of all the _______ components of a given area.
Ans✓✓✓ biotic
A gradual change in the species composition of a community over time
is termed Ans✓✓✓ succession.
A lichen, which consists of fungal and algal partners that live together
and provide nutrients to each other, is an example of Ans✓✓✓
symbiosis.
A relationship between two organisms in which one benefits and the
other is unaffected is called Ans✓✓✓ commensalism.
A(n) ______ species is one that makes up a small portion of the
community but has a large influence on community diversity.
Multiple choice question.
keystone Ans✓✓✓ keystone
A(n) __________is a community and its abiotic environment. Ans✓✓✓
ecosystem
, An autotroph is also called a Ans✓✓✓ primary producer.
An example of high species richness is Ans✓✓✓ the 15 different fish
species in a lake.
As a measure of diversity, species evenness (relative abundance) is
Ans✓✓✓ the proportion of the community that each species occupies.
As a result of biomagnification, mercury levels would be highest in a(n)
Ans✓✓✓ tertiary consumer.
As described in the Investigating Life essay, ______ increases in
monarch butterflies that feed on nonnative milkweed planted in the
United States. Ans✓✓✓ parasitism
Atoms such as carbon and nitrogen Ans✓✓✓ are recycled in
ecosystems.
Balanus barnacles crowd out Chthamalus barnacles in intertidal zones.
This is an example of the exclusion principle. Ans✓✓✓ competitive
Carbon from the atmosphere enters food chains through the actions of
Ans✓✓✓ photosynthetic autotrophs.
answers
A close and often lifelong ecological relationship between species is
called Ans✓✓✓ a symbiosis.
A community consists of all the _______ components of a given area.
Ans✓✓✓ biotic
A gradual change in the species composition of a community over time
is termed Ans✓✓✓ succession.
A lichen, which consists of fungal and algal partners that live together
and provide nutrients to each other, is an example of Ans✓✓✓
symbiosis.
A relationship between two organisms in which one benefits and the
other is unaffected is called Ans✓✓✓ commensalism.
A(n) ______ species is one that makes up a small portion of the
community but has a large influence on community diversity.
Multiple choice question.
keystone Ans✓✓✓ keystone
A(n) __________is a community and its abiotic environment. Ans✓✓✓
ecosystem
, An autotroph is also called a Ans✓✓✓ primary producer.
An example of high species richness is Ans✓✓✓ the 15 different fish
species in a lake.
As a measure of diversity, species evenness (relative abundance) is
Ans✓✓✓ the proportion of the community that each species occupies.
As a result of biomagnification, mercury levels would be highest in a(n)
Ans✓✓✓ tertiary consumer.
As described in the Investigating Life essay, ______ increases in
monarch butterflies that feed on nonnative milkweed planted in the
United States. Ans✓✓✓ parasitism
Atoms such as carbon and nitrogen Ans✓✓✓ are recycled in
ecosystems.
Balanus barnacles crowd out Chthamalus barnacles in intertidal zones.
This is an example of the exclusion principle. Ans✓✓✓ competitive
Carbon from the atmosphere enters food chains through the actions of
Ans✓✓✓ photosynthetic autotrophs.
