Relationships In An Ecosystem Question Preview (ID: 58477)


Relationships In An Ecosystem. TEACHERS: click here for quick copy question ID numbers.

A special relationship between organisms that lasts a long time is _________________.
a) symbiosis
b) commensalism
c) parasitism
d) mutualism

Because each area has a certain _________________, it can only support a limited population.
a) mutualism
b) carrying capacity
c) limiting factor
d) habitat

Water is a(an) _________________ that restricts the growth of populations in an ecosystem.
a) habitat
b) niche
c) limiting factor
d) symbiosis

When two organisms benefit in a symbiotic relationship, the relationship is called _______________.
a) commensalism
b) symbiosis
c) parasitism
d) mutualism

A symbiotic relationship in which one organism benefits while the other is harmed is ______________.
a) parasitism
b) mutualism
c) niche
d) commensalism

A relationship in which one organism benefits and the other is not harmed is ___________.
a) parasitism
b) commensalism
c) mutualism
d) niche

The place in which an organism lives and hunts for food is its _______________.
a) niche
b) limiting factor
c) habitat
d) carrying capacity

The particular role that an organism plays in a community is its _______________.
a) limiting factor
b) symbiosis
c) habitat
d) niche

In ________________, the parasite harms the ______________ organism it lives on or in.
a) parasitism/host
b) mutualism/niche
c) commensalism/host
d) symbiosis/niche

__________ limits competition as organisms develop relationships that allow them to live together.
a) commensalism
b) symbiosis
c) parasitism
d) exceeds

When the population of an area ______________ its carrying capacity, some plants or animals begin to die off.
a) compete
b) vegetation
c) exceeds
d) host

Each ecosystem has certain limiting factors that restrict the size of its populations. These include water, temperature, soil types, and the amount of ______________ available.
a) limiting factor
b) carrying capacity
c) host
d) vegetation

A symbiotic relationship that benefits only one organism, but does no harm to the other is known as ___________________.
a) commensalism
b) parasitism
c) symbiosis
d) vegetation

Living things _________________________________ for resources in an ecosystem.
a) host
b) compete
c) exceeds
d) symbiosis

The population that an area can support is its _____________________.
a) limiting factor
b) host
c) carrying capacity
d) exceeds

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