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Grade 3 · Biology

Grade 3 Biology practice

20 questions on living things, cells & microscopy. The answer key is a separate download.

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What is on the worksheet

  1. Which stage comes first in the life cycle of a chicken: egg or adult chicken?

    1. egg
    2. adult chicken

  2. Which stage comes first in the life cycle of a bean plant: seedling or adult plant with flowers?

    1. seedling
    2. adult plant with flowers

  3. Which stage comes first in the life cycle of a human: teenager or adult?

    1. adult
    2. teenager

  4. Which stage comes first in the life cycle of a frog: egg or adult frog?

    1. egg
    2. adult frog

  5. Which stage comes first in the life cycle of a bean plant: pod with new seeds or adult plant with flowers?

    1. pod with new seeds
    2. adult plant with flowers

  6. Which animal is a reptile: a turtle or a trout?

    1. a trout
    2. a turtle

  7. Which stage comes first in the life cycle of a butterfly: adult butterfly or caterpillar?

    1. adult butterfly
    2. caterpillar

  8. Which stage comes first in the life cycle of a human: child or teenager?

    1. teenager
    2. child

  9. Which stage comes first in the life cycle of a butterfly: egg or chrysalis?

    1. egg
    2. chrysalis

  10. Which animal is a mammal: a frog or a dolphin?

    1. a dolphin
    2. a frog

  11. Which animal is an amphibian: an owl or a salamander?

    1. an owl
    2. a salamander

  12. Which action records an observation rather than a guess about purpose?

    1. Drawing the number and shapes of leaves.
    2. Saying the plant wants to be famous.
    3. Assuming every leaf is identical.

  13. Which animal is a mammal: a turtle or a mouse?

    1. a turtle
    2. a mouse

  14. Which animal is an insect: a lizard or a butterfly?

    1. a butterfly
    2. a lizard

  15. Which stage comes first in the life cycle of a human: teenager or child?

    1. teenager
    2. child

  16. Which stage comes first in the life cycle of a chicken: adult chicken or egg?

    1. egg
    2. adult chicken

  17. Which animal is a fish: a shark or a ladybug?

    1. a ladybug
    2. a shark

  18. Which animal is a reptile: a turtle or a butterfly?

    1. a butterfly
    2. a turtle

  19. Which animal is an amphibian: a shark or a salamander?

    1. a salamander
    2. a shark

  20. Which animal is a bird: a penguin or a crocodile?

    1. a penguin
    2. a crocodile

Teach or revise the skill first

These short guides explain the idea with worked examples. Read one together before the worksheet, then use the sheet as practice.

  • Living things and careful observations: Study guide for Kindergarten to Grade 3: 4 key ideas, including observe, plants and compare; 2 worked examples and 3 practice questions. Use more than movement to decide whether something is alive.
  • Animal groups: Study guide for Grades 1 to 4: 2 worked examples and 2 practice questions. Sort animals by features you can check: milk for babies, feathers, gills, six legs, dry scales or moist skin.
  • Life cycles: Study guide for Grades 1 to 4: 2 worked examples and 2 practice questions. Every living thing goes through stages in order. Some animals, like frogs and butterflies, change shape completely.

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