Food Webs, Chains, Keystone Species and Trophic Cascades

Which animal is the apex predator?

• hawk
• lizard
• snake
• grass

Which animal is not the apex predator but, a predator to a mouse?

• hawk
• rabbit
• snake
• grass

In an energy pyramid, how much of the energy in each level gets passed to the next level above it?

• 80%

• 90%

• 10%

• 20%

Which of the following is a herbivore?

• cricket
• frog
• hawk
• shrew

An organism that obtains energy by eating other organisms.

• Consumer

• Producer

• Decomposer

• Detritivore

Bacteria, fungi, and earthworms are examples of: 

• scavengers
• predators
• prey
• decomposers

Which organism recieves the least amount of energy from the producer?

• Owl
• Grasshopper
• Lilypad
• Mouse

Which of the animals in this food web is an omnivore? (choose 2)

• Raven

• Snowshoe Hare

• Bison

• Grizzly Bear

If producers in this food web have 2,000kCal of energy, how much of that would end up going to the herring (secondary consumers)?

• 200 kCal

• 20 kCal

• 2 kCal

• 0.2KCal

Animals that only eat producers (also known as herbivores)

• Producers

• Primary Consumers

• Secondary Consumers

• Tertiary Consumers