Hawks and brown bears live together in the same habitat. There will be competition between the hawks and the brown bears only if which of the following is true?

Both brown bears and hawks feed on the same species of fish.

Brown bears hibernate during the winter while hawks remain active.

Pesticides in the fish population affect hawks’ eggs and decrease their population.

Both Shanna and Savanna feed on the same species of snakes.

The population of deer in a certain area is monitored over a period of six years. The data is represented in the graph provided. Which of the following is the most likely explanation for the change in population in 2009?

Humans introduced grazing animals that feed on the same plants as the deer.

Wild dogs, which prey on deer, were being hunted more than usual.

Snowfall in the previous spring was higher than the yearly average.

More insects that pollinate flowering plants move into the ecosystem.

A student wants to investigate competition between two organisms. For the investigation, it is most important that the student should choose organisms that –

are both active during the night.

have the different adaptations.

The milkweed plant serves an important role in the life cycle of the monarch butterfly. Adult monarchs lay their eggs on milkweed, and then caterpillars eat that same plant during their development. Based on the relationship between monarchs and milkweed, which of the following trends would be predicted when looking at data on the populations of these two organisms?

A decrease in the milkweed population will cause a decrease in the monarch butterfly population.

When the milkweed population decreases, the monarch butterfly population stays the same.

A decrease in the milkweed population will cause the monarch population to increase.

When the monarch population increases, the milkweed population stays the same.

Two species of fish live in the same pond. Which of the following would increase competition between these two species of fish?

Water level in the pond decreases.

Population of birds that eat the fish increases.

Number of food plants the fish eat increases.

If an invasive species is introduced to an ecosystem that eats that same plants as the rabbits in the ecosystem, what will happen to the rabbit population?

the rabbit population will likely decrease

the rabbit population will likely increase

the rabbit population will stay the same

Competition in ecosystems

Authored by Krista Sparrow

Science

7th Grade

NGSS covered

Used 97+ times

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40 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the variety of life in the world or in a particular habitat or ecosystem?

Limiting Factors

Habitat

Biodiversity

Organism

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Living or produced by living things.

Biotic

Abiotic

Resources

Competition

Tags

NGSS.MS-LS2-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Not living, or produced by living things

Abiotic factors

Biotic factors

Ecosystem

Population

Tags

NGSS.MS-LS2-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Hawks and owls eat the same type of food and struggle with one another to get their food. What is this an example of?

Competition

Biotic factor

Symbiosis

Population

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The specific environment in which all the biotic and abiotic factors in an area interact.

Ecosystem

Organism

Struggle

Competitive Interaction

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

NGSS.MS-LS2-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A self-contained living thing.

Organism

Population

Abiotic factor

Ecosystem

Tags

NGSS.MS-LS1-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Two or more interacting individuals of the same species located in the same area.

Population

Community

Ecosystem

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Competition in ecosystems

What is the variety of life in the world or in a particular habitat or ecosystem?

Living or produced by living things.

Not living, or produced by living things

Hawks and owls eat the same type of food and struggle with one another to get their food. What is this an example of?

The specific environment in which all the biotic and abiotic factors in an area interact.

A self-contained living thing.

Two or more interacting individuals of the same species located in the same area.

An organism that gets its energy by feeding on producers in the food chain

A source or supply from which benefits are produced.

An animal that eats other animals.

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