Populations And Communities Chapter 8 Question Preview (ID: 27003)


Chapter 8. TEACHERS: click here for quick copy question ID numbers.

As a population grows, this means _____.
a) an equal growth in all species
b) less resources for other species
c) no change in available resources for other species an equal
d) more resources for other species

What a species does in its habitat to survive is called its _____.
a) ecosystem
b) population
c) niche
d) community

An organism’s habitat includes which of the following?
a) only food for the organism
b) all of the resources the organism needs
c) nothing at all
d) only shelter for the organism

If the elephants, just because of their size, are the only large mammals that can get to the water to drink, the zebras may suffer. This is an example of which of the following?
a) competition between habitats
b) breakdown of ecosystems
c) competition between species
d) overlap of populations

A healthy community could have _____.
a) a variety of producers and consumers
b) only organisms that were producers
c) organisms that all had the same niche
d) only organisms that were consumers

Which of these is a limiting factor?
a) food supply
b) shelter
c) existence of predators
d) all of the above

In an area with high death rates from a disease such as malaria, what would lead to population growth?
a) The death rate has no effect on population growth.
b) The birth rate has no effect on population growth.
c) A low birth rate would make up for the death rate.
d) A high birth rate would make up for the death rate.

Carrying capacity refers to the largest _____ an environment can support.
a) ecosystem
b) community
c) population
d) habitat

A male and female rabbit hop into a new area where there are no other rabbits. Before they can even find shelter, they are killed by a coyote. The existence of a predator is a _____ factor on the population of rabbits in the area.
a) community
b) negative
c) ecosystem
d) limiting

Which of the following is a reason an animal population moves from one place to another?
a) too few predators in an area
b) Shelter in the original area is readily available.
c) too plentiful of a food supply
d) overpopulation

If there are no limiting factors, a population can reach its _____.
a) competition level
b) population potential
c) population density
d) biotic potential

What is the difference between a community and an ecosystem?
a) An ecosystem consists of all the populations in an area. A community is all the nonliving things in the area.
b) An ecosystem consists of nonliving things in an area. A community is all the living things in the area.
c) An ecosystem consists of living and nonliving things in an area. A community is all the populations in the area.
d) An ecosystem consists of living and nonliving things in an area. A community is all the members of one species in the area.

Samantha plants some flowers in a flower bed and then ignores them. Soon weeds grow and the flowers die. The weeds had been able to get enough resources to survive, while the flowers had not. This is an example of _____.
a) population size
b) habitat
c) competition
d) community

What is the difference between a population and a community?
a) A population is made up of all species in an area. A community is made up only of one species.
b) A population is made up of only one species. A community is made up of all species in an area.
c) A population is made up of all the species and nonliving things in an area. A community is made up of all species in an area.
d) The words mean the same thing.

If a population becomes so low that the species is at risk of having no individuals remaining, it is considered to be which of the following?
a) endangered
b) threatened
c) extinct
d) predated

Which of the following contributes to the growth of the human population?
a) overworking crop lands
b) pollution
c) famines in drought areas
d) more plentiful food supply

In a predator-prey relationship, _____.
a) the prey are producers
b) the predator hunts the prey for food
c) the prey hunts the predator for food
d) the prey keeps the predator population from growing too large

Which of the following might an omnivore eat?
a) a leaf
b) a mouse
c) a dead cow
d) leaf and mouse

Which of the following might an herbivore eat?
a) a leaf
b) a dead cow
c) a mouse
d) dead cow and leaf

Producers are organisms that get energy from which of the following?
a) herbivores
b) sunlight
c) carnivores
d) omnivores

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