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.

Any thing or organism that regulates the size of a population of another organism is known as __________.

materialization of precipitation

An increase in the population of an organism would most likely be associated with which of the following?

A decrease in necessary resources available.

A series of severe weather events in the habitat.

An expansion of suitable living space.

An increase in animals that prey on the organism.

What data would be most helpful to support the claim that the population of a certain plant is dependent on the rainfall in its habitat?

Rainfall amounts and number of these plants in a certain habitat over several years.

The average amount of water absorbed by the roots and given off by the leaves of these plants.

The amount of water retained in the soil in the area where the plants live.

The heights and number of leaves produced by these plants under different moisture conditions.

Abiotic and biotic factors that control the number of individuals in a population.

Species that is not native to an ecosystem and causes environmental and economic harm.

An organism that hunts, kills, and consumes other organisms for food.

An organism that is hunted and eaten by another organism.

The maximum population size that can be supported by an ecosystem.

Something that is needed by organisms and is not infinite in its abundance in the environment; if it is exhausted, then the organisms that need it cannot survive.

When two or more individuals or populations attempt to obtain a single resource.

Struggle between individuals of the same species for a limited common resource

Individuals of different species compete for the same resources in an ecosystem.

A system comprising of all the biotic and abiotic factors in an area and the interactions among them

Competition and Organism Interactions in Ecosystems

Quiz

•

Science

•

7th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-LS2-1, MS-LS2-4, MS-LS2-2

+5

Standards-aligned

Tien Vo

Used 399+ times

FREE Resource

29 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Non-Living things that affect the ecosystem

biotic

abiotic

dead

zombies

Tags

NGSS.MS-ESS2-4

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Living things that affect the ecosystem.

rocks

pokemon

abiotic

biotic

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

NGSS.MS-LS2-3

NGSS.MS-LS2-4

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Competition in an ecosystem occurs when

animals get bored.

more than one individual or population in an ecosystem relies (needs) the same limited resource.

there is more than enough of a resources for every living organism.

resources are unlimited.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-2

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When an organism depends on a factor for survival, this is called a ______________________ interaction.

independent

questionable

dependent

expendable

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A system made up of all the biotic and abiotic factors in an area and all the interactions among them.

Ecosystem

Niche

Adaptation

Nutrasystem

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A limited resource in an ecosystem is

something that is appreciated by organisms and is not infinite (unlimited) in the environment. If the resource runs out or is destroyed, the organisms will be okay.

something that is unlimited and will last forever, organisms and populations may compete, but only for fame and glory.

something that is needed by organisms and is not infinite (unlimited) in the environment. If the resource runs out or is destroyed, then the organisms that need it will likely die off.

something that is not needed by organisms and is not infinite (unlimited) in the environment. If the resource runs out or is destroyed, then there will be no effect on the organisms.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

A group of individuals from the same species living and interacting together in the same ecosystem is called a

organism.

troup.

zebra festival.

population.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4

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Competition and Organism Interactions in Ecosystems

29 questions

Non-Living things that affect the ecosystem

Living things that affect the ecosystem.

Competition in an ecosystem occurs when

When an organism depends on a factor for survival, this is called a ______________________ interaction.

A system made up of all the biotic and abiotic factors in an area and all the interactions among them.

A limited resource in an ecosystem is

A group of individuals from the same species living and interacting together in the same ecosystem is called a

A self-contained living thing. Examples include bacteria, douglas fir tree, wolf, turkey, madrone, salmon.

Plants compete for air, water, ________ within ecosystems.

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

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