Unit 2 Living things in their environment, Grade 8

Some trees shed their leaves in time for winter. Why is this adaptation useful?

• The trees save energy during the darker, colder months.

• The trees take in more sunlight through their branches.

• The trees attract animals to spread their seeds.

• The trees blend into their environment and hide.

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An organism that needs to eat other organisms to obtain energy is known as a:

• Autotroph

• Consumer

• Producer

• Mutualist

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What does a food web represent?

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

• A single pathway or energy flow between organisms.

• The specific ways that mutualism is carried out.

• How carnivores get their food.

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This organism draws its nutrients from dead organisms as it releases enzymes to cause the organisms to break down and break apart. Is it a...

• Producer

• Decomposer

• Consumer

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Which of these is NOT a typical cause of habitat destruction?

• Building

• Quarrying

• Dumping

• Agriculture

• Development of technology

  Dumping

Ozone is formed in the

• troposhere

• mesosphere

• stratosphere

• thermosphere

An organism that hunts another organism as a source of energy is called a

• prey

• herbivore

• producer

• predator

lions are to zebras as

• Parasites are to hosts

• Omnivores are to carnivores

• autotrophs are to heterotrophs

• Predators are to prey

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During the winter, there is a loss of grass population. Which is the most likely result to the ecosystem

• Primary consumer population will rise

• Secondary consumer population will rise

• Producer population will rise

• Populations will have limited resources

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Making air, rivers etc. dirty.

• Pollution

• Poison

• Waste

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