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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 21 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. What does this web not tell you?
  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. If a disease killed the pondweed and algae, what would happen?
2.A new road cuts a wood in two. What is one effect on the animals?
  • A.They all get more food
  • B.None at all
  • C.Some can no longer reach food or mates on the other side
3.All the decomposers are removed from a sealed tank. What builds up?
  • A.Dead material that is never broken down
  • B.More living plants
  • C.Clean water
4.Gray squirrels were brought into Britain. What happened to the red squirrels?
  • A.They ate the gray squirrels
  • B.They declined, partly because the gray squirrels took their food
  • C.They increased
5.A farmer sprays a field to kill every insect. What could happen to birds that eat insects?
  • A.They get more food
  • B.They start eating the spray
  • C.They have less food, so fewer survive
6.Too many deer graze in a wood. What happens to the young trees?
  • A.Nothing happens to them
  • B.They grow faster
  • C.Many are eaten before they can grow tall
7.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

LessonPrint · 5-LS2-1 · Set 21 · free to copy for classroom use

Answer key — Take One Out of the Web

Set 21. Prints on its own sheet.

  1. 1.1. It does not tell you how many of each animal live in the pond. 2. The newts and the frogs, which eat snails. 3. Only the fish, so the herons would eat more fish. 4. The snails, tadpoles and mayfly larvae would lose their food, and then so would the animals that eat them.
  2. 2.Some can no longer reach food or mates on the other side
  3. 3.Dead material that is never broken down
  4. 4.They declined, partly because the gray squirrels took their food
  5. 5.They have less food, so fewer survive
  6. 6.Many are eaten before they can grow tall
  7. 7.They increase, because fewer are eaten

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