Grade 7: Ecosystems Unit Quiz

All of the nonliving parts of an ecosystem are __________.

• biotic
• biology
• abiotic
• biography

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The plants and animals that live together in a habitat form a __________.

• community

• habitat

• population

• ecosystem

All of the living AND non-living things in an area that interact with each other are called a/an __________.

• community
• habitat
• population
• ecosystem

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What are biotic factors?

• dead things
• living things/ organisms
• weather
• plants

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Which is an example of an ABIOTIC factor?

• hummingbird
• water
• dead tree branch
• skunk

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Which is an example of a BIOTIC factor?

• lightning
• algae
• sand
• clouds

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The more diverse an ecosystem is --

• the more threatened its populations are

• the more similar the species will be

• the more sustainable it is

• the fewer varieties of species are present

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Which of these describes a mutually beneficial relationship between two organisms?

• A dog with worms in its intestine
• A turtle and a snail that both eat grass live in a river
• A honeybee pollinating a plant and receiving nectar for food
• A small fish attached to a shark, eating tiny pieces of the shark's food as it floats

An organism that kills and eats another for food

• Predator
• Prey
• Parasite
• Plant

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An organism that is killed and eaten by another organism

• Predator
• Prey
• Parasite
• Host

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