Lesson 4.7.4.1

4.7.4.1 Trophic levels Quiz: AQA Biology, Unit 7

20 questions

Written by Revision Ninja · Last reviewed 11 October 2026

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Lesson 4.7.4.1, Trophic levels: 20 multiple choice questions for the AQA GCSE Biology (8461), Unit 7: Ecology, written with Revision Ninja.

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The 20 questions

  1. Which type of organisms occupy trophic level 1 in a food chain?

    • Apex predators
    • Secondary consumers
    • Producers
    • Primary consumers

  2. Which trophic level consists of herbivores that eat producers?

    • Decomposers
    • Primary consumers
    • Tertiary consumers
    • Secondary consumers

  3. Which term describes carnivores that eat primary consumers?

    • Secondary consumers
    • Tertiary consumers
    • Primary consumers
    • Producers

  4. What term describes carnivores that eat other carnivores?

    • Secondary consumers
    • Tertiary consumers
    • Primary consumers
    • Producers

  5. What is the term for a carnivore with no natural predators?

    • Decomposer
    • Tertiary producer
    • Primary consumer
    • Apex predator

  6. How do decomposers break down dead plant and animal matter?

    • Secreting digestive enzymes
    • Filtering water particles
    • Photosynthesising sunlight
    • Ingesting solid tissue

  7. What trophic level number is given to producers?

    • 0
    • 2
    • 1
    • 4

  8. Which trophic level number is assigned to producers in a food chain?

    • Level 4
    • Level 1
    • Level 0
    • Level 2

  9. In the chain algae, zooplankton, small fish, tuna, what trophic level is the tuna?

    • 2
    • 3
    • 4
    • 1

  10. In the chain grass, rabbit, fox, eagle, which organism is a tertiary consumer?

    • Rabbit
    • Fox
    • Eagle
    • Grass

  11. A hawk eats mice and snakes, and is eaten by nothing. What is the hawk?

    • An apex predator
    • A decomposer
    • A producer
    • A primary consumer

  12. Which trophic level is occupied by a carnivore that eats herbivores?

    • Tertiary consumer
    • Primary consumer
    • Secondary consumer
    • Producer

  13. Which organism is at level 1 in a pond ecosystem?

    • Small fish
    • Green algae
    • Water beetle
    • Heron

  14. A fox eats rabbits, and rabbits eat grass. What trophic level is the fox?

    • 2
    • 3
    • 4
    • 1

  15. Which sequence represents a correctly ordered food chain?

    • Frog, grass, grasshopper
    • Grass, grasshopper, frog
    • Grasshopper, grass, frog
    • Frog, grasshopper, grass

  16. A bird eats insects that eat leaves. Which trophic level is the insect?

    • 4
    • 3
    • 1
    • 2

  17. A food chain has algae, snail, crab, seal and killer whale. Which organism is an apex predator?

    • Crab
    • Killer whale
    • Seal
    • Snail

  18. What happens to biomass as you move higher up a food chain?

    • It stays constant
    • It doubles
    • It increases
    • It decreases

  19. How do producers differ from decomposers in an ecosystem?

    • Producers eat herbivores
    • Producers secrete enzymes
    • Producers make food
    • Decomposers photosynthesise

  20. Why are there usually fewer apex predators than producers in an ecosystem?

    • Biomass is lost
    • Apex predators photosynthesise
    • Decomposers kill predators
    • Producers eat carnivores

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