Predator Prey Population

In an ecosystem, rabbits eat grass, and coyotes eat rabbits. All living things also need water, shelter, and mates to survive. Which of these situations will cause an increase in the population of rabbits?

• The water becomes polluted

• Deer, which also eat grass, enter the ecosystem

• An increase in rain causes more grass to grow

• The coyote population increases

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Populations can change over time. For instance, if weather and climate conditions for oak trees to produce more acorns than usual then the squirrel population will _______________.

• increase

• decrease

• stay the same

• go extinct

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

Which of the following is a predator and prey relationship?

• Cow and grass.

• Vulture and a dead lion.

• Tick and a deer.

• Spider and a fly.

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

If there are not enough predators and too many prey, the prey population may eventually starve.

• True

• False

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

What happens to the prey population if the predator population increases?

• The prey population increases

• The prey population decreases

• The prey population stays the same

• The prey population migrates

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

What is the effect of an increase in prey population on the predator population?

• The predator population decreases

• The predator population increases

• The predator population stays the same

• The predator population migrates

Tags

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Foxes are predators of hares. When the population of hares increases, soon after what happens to the population of foxes?

• It increases.

• It decreases.

• It stays the same.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-4

Analyze the relationship between predator and prey populations in an ecosystem.

• Predator populations always increase when prey populations decrease.

• Predator and prey populations are independent of each other.

• Predator populations increase when prey populations increase, and decrease when prey populations decrease.

• Prey populations increase when predator populations increase.

Tags

DOK Level 3: Strategic Thinking

In a predator/prey relationship, which of the following is the predator?

• Deer eating grass

• Lion hunting a zebra

• Rabbit eating carrots

• Cow grazing on hay

Tags

NGSS.MS-LS2-4

an animal that hunts other animals for food

• scavenger

• prey

• predator

• producer