Science Question Preview (ID: 33189)


Chapter 21 Review. TEACHERS: click here for quick copy question ID numbers.

One example of competition among members of a meerkat population is
a) fighting over mates
b) warning others of danger
c) huddling together to stay warm
d) teaching young to search for food

Rabbits move into a new field where there is plenty of room to dig new burrows. This is an example of
a) overpopulation
b) immigration
c) carrying capacity
d) competition

A shrimp removes and eats the parasites from the gills of a fish. The fish stays healthier because the parasites are removed. The relationship is
a) commensalism
b) competition
c) mutualism
d) parasitism

The need for organisms to rely on the same resources causes
a) competition
b) biotic potential
c) carrying capacity
d) population growth

The number of organisms in a specific area is
a) a community
b) the carrying capacity
c) the population density
d) the population growth

The number of robins that hatch in a year is the population's
a) biotic potential
b) birthrate
c) carrying capacity
d) exponential growth

A robin population that reaches its biotic potential probably shows
a) exponential growth
b) low growth
c) negative growth
d) no growth

An organism that uses sunlight to make food molecules is a(n)
a) carnivore
b) consumer
c) herbivore
d) producer

Which is NOT part of Earth's biosphere?
a) low atmosphere
b) surface of the Moon
c) bottom of the Pacific ocean
d) North American continent

Which is a limiting factor for a cottontail rabbit population on the prairie in Oklahoma?
a) a large amount of food
b) a large amount of shelter space
c) an abundance of coyotes in the area
d) an unpolluted river in the ecosystem

Which factor does NOT normally affect human population size?
a) birthrate
b) death rate
c) population movement
d) lack of resources

Which is defined as demand for resources in short supply in a community?
a) biotic potential
b) competition
c) density
d) limiting factor

Which is NOT a possible result of overpopulation?
a) damage to soil
b) increased carrying capacity
c) loss of trees and plants
d) more competition

What does a population undergo when it has no limiting factors?
a) exponential growth
b) extinction
c) migration
d) population movement

What is the term for all species living in the same ecosystem at the same time?
a) biosphere
b) community
c) habitat
d) population

Which type of relationship includes mutualism and parasitism?
a) competition
b) cooperation
c) predation
d) symbiosis

Which is a population?
a) all meerkats in a refuge
b) all the types of birds in a forest zoo
c) all the types of cats in a zoo
d) all the types of insects in the swamp

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