Ecosystems and Food Webs Quiz

What is the term used to describe the interaction of living and nonliving things in a habitat?

• Ecosystem

• Biome

• Biosphere

• Environment

What happens when a spider monkey eats fruit in the rainforest?

• It pollutes the environment

• It scares other animals

• It decreases plant growth

• It helps in seed dispersal

What could cause the spider monkey population to decline?

• Increased fruit availability

• New diseases or over-hunting

• Colder climate changes

• More predators in the ecosystem

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Why is it important not to disturb food webs?

• It can lead to uncontrolled plant growth

• It might knock down the entire ecosystem

• Animals will stop reproducing

• It increases the number of decomposers

What is likely to happen after a natural disaster like a forest fire?

• Plants will stop growing permanently

• Ecosystems cannot recover

• Habitats will return to normal over time

• All species will immediately thrive

What is a herbivore?

• An organism that only eats plants
• An organism that only eats other animals
• An organism that eats plants and animals

Pupfish have been living in a saltwater lake for thousands of years. over time, the lake has been slowly getting smaller. Which of the following is most likely to happen as a result of the lake shrinking?

• There will be more pupfish because there will be plenty of space for them.
• There will be fewer pupfish because there will not be enough space for them.
• The lake will become saltier because more pupfish will grow.
• The lake will become less salty because fewer pupfish will grow.

Which of the following best describes the role of decomposers in an ecosystem?

• They produce their own food through photosynthesis.

• They consume living plants and animals.

• They break down dead organisms and recycle nutrients back into the ecosystem.

• They compete with primary producers for sunlight.