7th Grade Ecology Test

What does the arrow represent in a food web?

• It shows which animals live next to each other.
• The flow of water from one organism to another
• The flow of energy from one organism to another
• It shows how diseases are passed from one organism to another

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Where do krill get their energy from?

• Phytoplankton
• Fish
• Phytoplankton & Fish
• Blue Whale

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Which is true about this food web?

• Elephant seals get their energy from penguins
• Elephant seals get their energy from killer whales
• Elephant seals eat killer whales
• Elephant seals and penguins compete for squid

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Which is true about killer whales and leopard seals?

• Both compete for fish as a food source
• Both are primary consumers
• Both are considered producers
• Both compete for penguins as a food source

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If seaweed and phytoplankton are removed from the ecosystem, what is true about the populations of the remaining organisms?

• The populations will decrease
• The populations will increase
• No change will take place
• Some populations will increase and some will decrease

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Which organisms are the producers in this food web?

• Fox and Buzzard
• Dragonfly, Berries, and Plantains
• Berries and Plantains
• Berries, Butterfly, and Greenfly

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Mice and rabbits both compete for

• foxes
• buzzards
• frogs
• plantains

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Trees in an ecosystem compete for which abiotic factor(s)?

• sunlight
• water
• space
• all of the options

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Which is an example of a primary producer?

• small shrubs
• rabbits
• coyotes
• earthworms

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Which is an example of a primary consumer?

• small shrubs
• rabbits
• coyotes
• earthworms

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