TCI Ecosystems Lesson 1 Resources in Living Systems

An organism is a(n)

• group of the same species.

• group of living things.

• individual non-living thing.

• individual living thing.

In order to survive, grow, and reproduce, living things need these resources:

• to be around as many different living things as possible

• an unlimited supply of living resources

• access to a constant light source when they are born

• other living things and non-living things

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Which of these situations describes competition for a resource?

• a flock of birds fly in formation in the sky

• a horse gives birth to a foal

• a cow grazes by itself in a field

• a herd of elephants drink water at a small watering hole

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NGSS.MS-LS2-1

A population is a group of

• living and nonliving things that are exist in the same environment.

• a small group of living things that use the same resources.

• nonliving things that are located in the same area and provide resource for living things.

• living things of the same species that live and reproduce in the same area.

The link between the amount of a resource and the size of a population that depends on that resource is called a

• gravitational relationship.

• survival relationship.

• cause and effect relationship.

• spatial relationship.

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NGSS.MS-LS2-1

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What allows a species to be more competitive over food in a particular environment?

• Their population size is smaller than other species’ population sizes.

• Their communications are louder than other species’ communications.

• Their feeding habits are better than other species feeding habits.

• Their physical size is smaller than other species in the environment.

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NGSS.MS-LS2-1

An ecosystem is

• any area that located on land.

• a group of populations of living things and the food sources in their environment.

• a group of populations of living things but NOT the non-living parts of their environment.

• a group of populations of living things and the non-living parts of their environment.

Which of these statements is true of a terrestrial biome?

• Terrestrial biomes’ main resources are light and nutrients.

• Terrestrial biomes have unlimited resources.

• Terrestrial biomes usually have large human and animal populations.

• Terrestrial biomes experience a range of temperatures within the biome.

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Which of these statements is NOT true of the biosphere?

• It includes the parts of Earth in which organisms live.

• It includes all of Earth’s ecosystems.

• It includes the highest mountaintops.

• It includes living things only.

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Which of these would NOT be included in Earth’s biosphere?

• a school of fish

• a squid

• Mt. Everest

• the moon