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Take One Out of the Web is a free printable Grade 5 science worksheet on predicting how a change to one part of a food web affects the rest, aligned to NGSS performance expectation 5-LS2-1. It prints 7 questions with an answer key on its own sheet of paper, in 25 versions that each ask different questions, so no two students in the class work from the same page. Print it from the browser or download it as a PDF — no account, no email.

Set 19 of 25 · the same problems every time you open this link.

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Set 1 has all 25 in a single PDF. All 25 sets ask different questions.

Take One Out of the Web

5-LS2-1

NameDate

Read the food web, then answer the questions.

1.Read the record, then answer the questions.

Who Eats What in Our Pond

A food web the class drew from a term of pond-dipping records. WHO EATS WHAT Pondweed and algae are eaten by snails, tadpoles and mayfly larvae. Mayfly larvae are eaten by newts and fish. Snails are eaten by newts and frogs. Tadpoles are eaten by newts and fish. Frogs and fish are eaten by herons. Dead plants, dead animals and droppings are broken down by bacteria and worms in the mud, returning matter to the water.

  1. 1. If a disease killed the pondweed and algae, what would happen?
  2. 2. If every snail were taken out, which animals would lose some of their food?
  3. 3. If the frogs disappeared, what would the herons have left to eat?
  4. 4. Why do the bacteria and worms matter to the pondweed?
2.The foxes are removed from a field. What happens to the rabbits at first?
  • A.They leave at once
  • B.They increase, because fewer are eaten
  • C.They decrease
3.Gray squirrels were brought into Britain. What happened to the red squirrels?
  • A.They declined, partly because the gray squirrels took their food
  • B.They increased
  • C.They ate the gray squirrels
4.Ladybirds are released in a greenhouse full of aphids. What happens to the aphids?
  • A.They eat the ladybirds
  • B.They fall in number, because ladybirds eat them
  • C.They increase
5.The rabbits in that field then increase. What happens to the grass?
  • A.There is more of it
  • B.It is not affected
  • C.There is less of it, because more rabbits are eating it
6.A forest fire burns the trees. Which animals lose their food first?
  • A.None, fire does not affect food
  • B.Those that eat the leaves and seeds of the trees
  • C.The animals that eat other animals
7.Why can removing one plant affect an animal that never eats it?
  • A.It cannot affect it
  • B.The animals that animal eats may depend on that plant
  • C.Animals smell plants

LessonPrint · 5-LS2-1 · Set 19 · free to copy for classroom use

Answer key — Take One Out of the Web

Set 19. Prints on its own sheet.

  1. 1.1. The snails, tadpoles and mayfly larvae would lose their food, and then so would the animals that eat them. 2. The newts and the frogs, which eat snails. 3. Only the fish, so the herons would eat more fish. 4. They break down dead plants and animals, returning matter to the water that the pondweed can use.
  2. 2.They increase, because fewer are eaten
  3. 3.They declined, partly because the gray squirrels took their food
  4. 4.They fall in number, because ladybirds eat them
  5. 5.There is less of it, because more rabbits are eating it
  6. 6.Those that eat the leaves and seeds of the trees
  7. 7.The animals that animal eats may depend on that plant

Last reviewed 2026-09-05. Aligned to 5-LS2-1 of the Next Generation Science Standards.