Food webs and Chains

Bacteria, fungi, and worms typically serve what role in an ecosystem?

• herbivore
• carnivore
• omnivore
• decomposer

What is a producer?

• an organism that gets energy from eating other organisms
• an organisms that uses sunlight to make its own food
• an organism that gets energy from eating dead organisms, non-living material or waste
• an organism that uses chemical energy to make its own food

Where does the energy start in this food chain?

• Plant
• Sun
• Deer
• Wolf

Which of these completes the food chain correctly?

• a rock

• a fox

• a plant

• an egg

Which of these is a possible food chain for this environment?

• Sun → grass → fly → frog

• frog → fly → grass → Sun

• Sun ← grass ← fly ← frog

• Sun → fly → frog → snake

What are the organisms that break down dead stuff?

• Producers
• Consumers
• Decomposers
• Organisms

Which of these organisms would receive energy from the snake?

• Plant
• Rabbit
• Mouse
• Hawk

Which food chain is in the correct order?

• cat, grass, bird, snail
• bird, snail, grass, cat
• grass, snail, bird, cat
• grass, cat, bird, snail

What is the role of a producer?

• Use sunlight to make food
• Gain energy from eating other organisms
• Keep other species from overpopulating
• Breaking down dead things

What's the role of consumers in a food chain?

• Use sunlight to make food 
• Eat other species and keep them from overpopulating
• Break down dead stuff
• Add nutrients to the soil