# Population Graphs

8 Questions | Total Attempts: 274

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These questions deal with CARRYING CAPACITY. Enter (1) YOUR PERIOD followed by (2) FIRST & LAST NAME.

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• 1.
The graph below shows the changes in the size of a fish population over a period of time. The dashed line on the graph represents the
• A.

Carrying capacity of the environment

• B.

Life span of the species

• C.

Level at which extinction is reached

• D.

Level of maximum biodiversity of the species

• 2.
Which graph represents a population that grew and is maintained at the carrying capacity of its ecosystem?
• A.
• B.
• C.
• D.
• 3.
The graph below shows the growth of a field mouse population in an ecosystem over time. The dashed line indicating the carrying capacity for the mouse population is correctly shown on which graph?
• A.
• B.
• C.
• D.
• 4.
The dotted line on the graph below represents the potential size of a population based on its reproductive capacity. The solid line on this graph represents the actual size of the population. Which statement best explains why the actual population growth is less than the potential popu- lation growth?
• A.

Resources in the environment are limited.

• B.

More organisms migrated into the population than out of the population.

• C.

The birthrate gradually became greater than the death rate.

• D.

The final population size is greater than the carrying capacity.

• 5.
Changes in a deer population are shown in the graph below. Which statement best explains section X?
• A.

The population has reached the carrying capacity of its environment.

• B.

Energy is used for interbreeding between members of different species.

• C.

A predator recycles the remains of dead organisms.

• D.

Competition does not occur between members of different species in the same habitat.

• 6.
Students conducting a study on an insect population placed 25 insects of the same size in a box. The amount of food, water, and shelter available to the insects was kept constant. Each month, students removed and counted the number of insects present, recorded the total, and returned the insects to the box. The graph below shows the number of insects in the box over a 12- month period. What inference can be made regarding this insect population?
• A.

All the insects in the box are the same age.

• B.

The insects hibernated from January to April.

• C.

The population has carnivorous members.

• D.

The population reached carrying capacity by January.

• 7.
The size of a mouse population in a natural ecosystem tends to remain relatively constant due to
• A.

The carrying capacity of the environment

• B.

The lack of natural predators

• C.

Cycling of energy

• D.

Increased numbers of decomposers

• 8.
The carrying capacity for herbivores in a habitat is most directly affected by the availability of
• A.

Heat energy released by carnivores

• B.

Carbon dioxide in the atmosphere

• C.

Decomposers in the soil

• D.

Autotrophs in the habitat