What does a food web represent?

All connections of energy flow throughout all organisms in a habitat.

The specific ways that mutualism is carried out.

A single pathway or energy flow between organisms.

Five different living organisms are represented below. Which statement about the organisms represented above is correct?

Only the flowering plant and aquatic plant are autotrophs.

All of the organisms are autotrophs.

Only the flowering plant, green heron, and aquatic plant carry out photosynthesis.

Only the frog, aquatic plant and green heron are heterotrophs.

Many oak trees are cut down and removed from an oak-hickory forest. A likely result of the direct harvesting of the oak species would be the:

conservation of forest resources

recycling of all the nutrients in the forest

prevention of the extinction of animals native to the area

Which human activity most directly causes a significant increase in the amount of carbon dioxide in the atmosphere?

not using products containing plastics

planting large numbers of trees

Producers are generally found at the beginning of a food chain. Which statement best explains why this is true?

Producers do not rely on other organisms for food.

Producers are usually smaller in size than consumers.

There are always more consumers than producers in food chains.

Consumers are always more complex organisms than producers.

An invasive species, the spiny water flea, was recently found in Lake Ontario. These water fleas eat zooplankton, a food also consumed by native fishes. The fleas spread from lake to lake by attaching to fishing lines, anchor ropes, and boats. Which statement best describes the effect of the water flea on the lake?

It will feed on organisms that are important to other species.

It will not compete with animals in the local food chain.

The number of water fleas will decrease due to a lack of food.

There will be no effect on native species in the lake.

Carbon dioxide and oxygen are important resources in ecosystems and are:

recycled through the activity of living and nonliving systems

stored in the animals of the ecosystem

lost due to the activities of decomposers

released by the process of photosynthesis

Although we rely on coal, oil, and natural gas to produce energy, some environmental scientists have proposed that we use less fossil fuel. One reason to support this proposal is to:

help us to reduce the production of carbon dioxide gas

enable us to preserve rainforests in tropical areas

allow us to decrease the use of fertilizers on crops

encourage us to end research on wind and water power sources

Professor Dave Ecology

Authored by Charles Martinez

Biology

9th Grade

NGSS covered

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

An individual belonging to a specific species

Biotic

Community

Organism

Reptile

Tags

NGSS.MS-LS4-4

NGSS.MS-LS4-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

All of the living and nonliving things in an area that interact with each other are called a/an ______.

community

habitat

population

ecosystem

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-2

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The living part of an ecosystem

Biotic

Abiotic

Mother Earth

Flowers

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-5

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The non-living part of an ecosystem

Ocean

Lava Flow

Birds

Abiotic

Tags

NGSS.MS-LS2-3

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The study of how living things interact with one another and with their environment.

Biology

Lithology

Ecology

Farmacology

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-2

NGSS.MS-LS2-1

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Two or more members of a particular species living and interacting in the same area

Community

Population

Organisms

Biosphere

Tags

NGSS.MS-LS2-4

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Different populations living and interacting with each other in the same area

Biome

Ecosystem

Community

Niche

Tags

NGSS.MS-LS2-2

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Professor Dave Ecology

An individual belonging to a specific species

All of the living and nonliving things in an area that interact with each other are called a/an ______.

The living part of an ecosystem

The non-living part of an ecosystem

The study of how living things interact with one another and with their environment.

Two or more members of a particular species living and interacting in the same area

Different populations living and interacting with each other in the same area

What does every food chain start with? (Even if it's not drawn or written there!)

Consumer that eats plants

What does a food web represent?

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