The arrows in a food chain or web represents what?

They show what direction the energy is flowing between organisms.

They point to the organism that is being eaten.

It shows how sunlight flows within an ecosystem.

They represent how water is transferred within a habitat.

Which statement best explains how sweating during exercise maintains homeostasis?

it regulates mineral concentrations in cells

Which statement best explains why animals are considered heterotrophic?

they are able to obtain nutrients by consuming other organisms or their products

they are able to produce food through the process of photosynthesis

they are able to produce food through the process of respiration

they are able to obtain nutrients by decomposing plant and animal tissue

In some ecosystems, wolves have been eliminated due to their threats to humans. How can the reintroduction of wolves benefit the ecosystem?

it can eliminate weak animals from a prey population, thereby decreasing competition for natural resources

it can eliminate the most fit animals among the prey population, which will cause an increase in birthrates of the prey

it can cause the prey population to migrate to other areas, resulting in more fit prey

it can cause the prey population to better blend in with the environment

If the population of a certain predator increases, there is often _______ its prey

an increase of the population of

What will happen if all of the frogs in a population die?

The frogs' predators will decrease and the frogs' prey will increase

The frogs' predators will increase and they frogs' prey in increase.

The frogs' predators will increase and the frogs' prey will decrease

There will be an excess of frogs in the population

When a specific population grows past the ecosystem's carrying capacity, what happens to the population?

Density Dependent limiting factors start to occur resulting in the population going back below carrying capacity.

Density Independent limiting factors start to occur resulting in the population going farther above carrying capacity.

The population will go extinct due to lack of resources

The population grows then finds a new carrying capacity

Ecosystems & Ecology Review

Authored by Jennifer O'Hara

Biology, Other

9th Grade

NGSS covered

Used 10+ times

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40 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

All organisms that live in a particular place and the physical aspects of that place make up a(n)...

ecosystem

habitat

community

food chain

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Animals that feed on plants are at least in which of the following?

first trophic level

second trophic level

third trophic level

fourth trophic level

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Grizzly bears, snakes, and worms can be members of the same...

species

trophic level

ecosystem

none of the above

Tags

NGSS.MS-LS2-2

FILL IN THE BLANK QUESTION

1 min • 1 pt

The dry weight of tissue and organic matter in an ecosystem.

Tags

NGSS.HS-LS2-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

All organisms that live in a particular place and the physical aspects of that place make up a(n)...

ecosystem

habitat

community

food chain

FILL IN THE BLANK QUESTION

1 min • 1 pt

These release nutrients back to the environment to be recycled by other organisms.

Tags

NGSS.MS-LS2-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The number of species living in an ecosystem is referred to as...

succession

biodiversity

the food chain

productivity

Tags

NGSS.MS-LS2-5

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Ecosystems & Ecology Review

All organisms that live in a particular place and the physical aspects of that place make up a(n)...

Animals that feed on plants are at least in which of the following?

Grizzly bears, snakes, and worms can be members of the same...

The dry weight of tissue and organic matter in an ecosystem.

All organisms that live in a particular place and the physical aspects of that place make up a(n)...

These release nutrients back to the environment to be recycled by other organisms.

The number of species living in an ecosystem is referred to as...

Organisms that can produce their own source of food are called...

Organisms that are unable to make their own food are called...

Which of the following are producers in the food web?

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