Ecosystem interactions

What is the main energy source for this food chain?

• Berries
• Squirrel
• Bobcat
• Sun

The arrows represent -

• The consumers in the food chain
• Which animal eats another
• How energy flows
• The direction in which organisms move

Which of the following is NOT a consumer?

• Plants
• Polar Bear
• Oxen
• Insects

Which of these organisms is most likely an herbivore?

• Arctic Fox
• Lemmings
• Snowy Owl
• Plants

What best describes the role of the amphipods in this food web?

• Consumer and Herbivore
• Consumer and Carnivore
• Producer and Decomposer
• Producer and Herbivore

If the bass were removed from this food web, which of the following would most likely NOT be an effect?

• The crayfish population would increase
• The pickerel population would decrease
• The amphipod population would increase
• The snail population would increase

Which of the following is NOT something plants need for photosynthesis?

• Carbon Dioxide
• Water
• Sunlight
• Oxygen

Based on the table, which two types of birds do NOT compete for food?

• Eastern bluebird and yellow warbler
• Purple martin and lesser goldfinch
• Yellow warbler and purple martin
• Lesser goldfinch and American goldfinch

Which of these is an example of an organism interacting with another organism in its environment?

• A fire ant digging a tunnel in sandy soil
• A blue jay drinking water from a puddle
• A bee collecting pollen from a tree
• A hawk circling in the air over a tree

A food web for some organisms in an African rain forest is shown here. Which organisms in this food web eat only consumers?

• Okapis
• Civets
• Leopards
• Gorillas