Environmental Sem. 1 Final Exam Review

Which symbiotic relationship is the only one where both organisms are harmed?

• Competition

• Mutualism

• Predation

• Parasitism

• Commensalism

Which symbiotic relationship is the only one where both organisms benefit?

• Competition

• Mutualism

• Predation

• Parasitism

• Commensalism

What would happen to a community if a keystone species were removed?

• The community would likely perish.

• The community would likely flourish.

• The community would not change.

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What would happen if the hawk was removed from the ecosystem?

• The snake, mouse, and rabbit populations would increase.

• The snake, mouse, and rabbit populations would decrease.

• The fox and owl populations would need to find new prey.

• Nothing, the hawk population is not important in this ecosystem.

• The fox and the owl populations would become prey to other animals.

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Identify the producers and consumers in the food web below: Match the items to the correct category.

• Producers

• carrots

• Producers

• rabbits

• Producers

• grasses

• Consumers

• mice

• Consumers

• grains

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This is a picture of a (a)   because (b)   .

• cat

• dog

• bird

• fish

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Which organisms are considered decomposers?

• Earthworms and insects

• Fish and birds

• Plants and algae

• Bacteria and fungi

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What is the role of secondary consumers in the flow of energy in ecosystems?

• They break down dead organic matter

• They convert sunlight into energy

• They feed on other animals to obtain energy

• They feed on plants to obtain energy

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What is the main purpose of photosynthesis in ecosystems?

• To capture carbon dioxide

• To produce oxygen

• To break down organic matter

• To convert solar energy into chemical energy

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Which organisms convert solar energy into chemical energy through photosynthesis?

• Bacteria

• Animals

• Fungi

• Plants

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