Organisms and Environment

The picture above shows organisms that live in a land ecosystem. Which organism is a producer?

• organism 1

• organism 2

• organism 3

• organism 4

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NGSS.MS-LS2-3

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The organisms that live around a pond interact with biotic and abiotic factors. Which of the following is a biotic factor of the pond environment?

• muddy soil

• cattail plants

• slowly flowing water

• warm temperatures

What is the role of algae in an ocean food web?

• producers

• decomposers

• primary consumers

• secondary consumers

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NGSS.MS-LS2-3

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This diagram shows the movement of energy through an ecosystem. Which statement is the best description of how energy derived from the sun flows through this food web?

• consumer--producer--decomposer

• producer--decomposer--consumer

• producer--consumer--decomposer

• decomposer--producer--consumer

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NGSS.MS-LS2-3

NGSS.MS-LS1-6

Which is the initial source of energy in most ecosystems?

• sunlight

• decomposers

• nutrients in soil

• oxygen in the air

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NGSS.MS-LS1-6

Pablo has a hamburger and a salad for lunch. Which term best describes Pablo.

• producer

• scavenger

• herbivore

• omnivore

Plants rely on animals to produce carbon dioxide. What do plants produce that animals need to survive?

• food and oxygen

• sunshine and rain

• carbon dioxide and food

• herbivores and carnivores

What would happen if all the mice died from a disease?

• the snakes would eat pine seeds instead of mice.

• the producers would stop making food.

• the population of the snakes would increase.

• the population of the snakes would decrease.

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NGSS.MS-LS2-3

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Sometimes a species that is introduced to an area grows quickly and crowds out organisms that were already living there. What is this introduced species called?

• native species

• protective species

• invasive species

• beneficial species

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NGSS.MS-LS2-5

A new shopping center was built on a vacant lot. The table shows the numbers of plants before and after construction. Based on these data, which is true?

• Humans did not change the environment.

• There were fewer total plants before the shopping center was built.

• There were more kinds of plants before the shopping center was built.

• There were more kinds of plants after the shopping center was built.

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NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-ESS3-4