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Boss quiz

10 questions on the whole topic. You get one try at each.

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  1. What does every food chain start with?

    • A predator
    • A decomposer
    • A producer
    • A herbivore

  2. In the food chain grass → rabbit → fox, what do the arrows show?

    • The way the animals move
    • Which living thing is bigger
    • Energy being transferred from each food to the animal that eats it
    • The fox passing energy down to the rabbit

  3. A vole eats grass. An owl eats the vole. What is the vole?

    • A producer
    • A secondary consumer
    • A primary consumer
    • A decomposer

  4. What is a food web?

    • All the plants in a habitat
    • A list of everything one animal eats
    • A food chain with a spider in it
    • Food chains from one ecosystem joined together

  5. What do decomposers do?

    • Carry pollen from flower to flower
    • Break down dead plants and animals, so the nutrients can be used again
    • Hunt and eat other animals
    • Make food by photosynthesis

  6. In a wood, foxes eat rabbits. A disease kills most of the rabbits. What is most likely to happen to the foxes?

    • Nothing changes
    • Their number rises, because the rabbits are easy to catch
    • They become herbivores
    • Their number falls, because they have less food

  7. Why do fruit farmers need bees and other insects?

    • They eat the weeds between the trees
    • They scare away birds
    • They pollinate the flowers, so that fruit can form
    • They make the soil richer

  8. Which of these is a living thing changing its environment?

    • A daisy growing badly in the shade
    • A frog dying when its pond dries up
    • A fox sheltering from the rain
    • A beaver building a dam that floods a valley

  9. What is a population?

    • The place where a living thing lives
    • The number of species in a food web
    • All the living things in an area
    • All the living things of one species in an area

  10. A toxin that stays in the body gets into a lake. The food chain is algae → minnow → perch → heron. Which living thing ends up with the most toxin in its body?

    • The minnow
    • The heron
    • The algae
    • The perch
Answers
  1. A producer. A producer, such as a green plant, makes its own food by photosynthesis.
  2. Energy being transferred from each food to the animal that eats it. Each arrow means “is eaten by”. It points the way the energy goes.
  3. A primary consumer. The vole is the first consumer in the chain: it eats the producer.
  4. Food chains from one ecosystem joined together. Most animals eat more than one thing, so the chains link up.
  5. Break down dead plants and animals, so the nutrients can be used again. Bacteria and fungi return nutrients to the soil.
  6. Their number falls, because they have less food. A fall in the prey population leaves less food for its predators.
  7. They pollinate the flowers, so that fruit can form. Without pollination the flowers of crops such as apples do not make fruit.
  8. A beaver building a dam that floods a valley. The dam turns a stream into a pond. In the other three, the environment affects the living thing.
  9. All the living things of one species in an area. All the daisies in one field are a population.
  10. The heron. The toxin builds up at every step, so the top predator holds the most.