FOOD WEB, FOOD CHAIN AND ENERGY LEVEL

1. What is a series of organisms that eat other organisms to obtain energy?

• Commensalism

• Energy cycle
• Nutrient flow
• Food chain

2. Which level of the energy pyramid has the most energy

• Producers (bottom level)
• Decomposers (below producers)
• Tertiary consumers (top level)
• Secondary consumers (middle level)

3. What is the term for organisms that make their own food?

• Heterotrophs
• Decomposers
• Saprophytes
• Autotrophs

4. What type of organism eats both plants and animals?

• Herbivore
• Carnivore
• Detritivore
• Omnivore

5. In a food chain, what is the primary consumer?

• Carnivore
• Herbivore
• Omnivore
• Decomposer

6. What is the role of decomposers in an ecosystem?

• To compete with herbivores

• To break down dead matter

• To consume plants

• To produce energy

7. Which type of organism is primarily responsible for photosynthesis?

• Herbivores

• Carnivores

• Detritivores

• Producers

8. What is the top level of the food chain called?

• Secondary consumers

• Primary consumers

• Tertiary consumers

• Producers

7. 9. What is a diagram that shows the feeding relationships between different organisms?

• Food chain
• Ecosystem map
• Food web
• Nutrient cycle

10. 10. What percentage of energy is typically transferred from one trophic level to the next?

• 10%
• 50%
• 20%
• 5%