Year 4 Science Grouping living things: check-up and practice test questions

Method. Think about the features of birds.

1. Read the features. Birds have feathers and a beak.
   feathers and a beak
2. Write the answer.
   birds

Check. Birds lay eggs with hard shells. ✓

Method. Think about the features of fish.

1. Read the features. Fish have fins and scales, and breathe with gills.
   fins and scales
2. Write the answer.
   fish

Check. Fish live in water. ✓

Method. Read the table in section 2.2.

1. Find the features. Moist skin and eggs laid in water are features of amphibians.
   moist skin
2. Write the answer.
   amphibians

Check. Frogs and toads are amphibians. ✓

Method. Think about the feature they share.

1. Read the feature. All three feed their young on milk.
   milk
2. Name the group. Animals that feed their young on milk are mammals.
   mammals
3. Write the answer.
   mammals

Check. Whales, bats and dolphins are mammals. ✓

Method. Read the table in section 2.3.

1. Read the row. The row for insects says 6 legs.
   6 legs
2. Write the answer.
   6

Check. Insects have six legs. ✓

Method. Read the table in section 2.3.

1. Read the row. The row for spiders says 2 body parts.
   2 body parts
2. Write the answer.
   2

Check. A spider has two body parts, and an insect has three. ✓

Method. Think about the features of a penguin.

1. Read the features. A penguin has feathers and a beak.
   feathers
2. Write the answer.
   birds

Check. A penguin swims, but it is a bird. ✓

Method. Read the table in section 2.2.

1. Read the mammal row. Mammals have fur or hair, and feed their young on milk.
   fur or hair
2. Write the answer.
   Accept any one of: fur or hair; feeds its young on milk.

Check. Either feature is correct. ✓

Method. Check whether each animal has a backbone.

1. Check the snail. A snail has no backbone.
   no backbone
2. Check the worm. A worm has no backbone.
   no backbone
3. Decide. Both are animals without a backbone, so both are invertebrates.
   yes
4. Write the answer.
   yes

Check. Invertebrates are animals without a backbone. ✓

Method. Think about the features of a bat.

1. Read the features. A bat has fur, and feeds its young on milk.
   fur and milk
2. Write the reason. These features make it a mammal, even though it flies.
   mammal
3. Write the answer.
   Accept any sentence that says a bat has fur and feeds its young on milk, so it is a mammal.

Check. Flying is not enough to make a bird. ✓

Method. Think about the skin of this group.

1. Read the feature. Reptiles have dry scaly skin.
   dry scaly skin
2. Write the answer.
   reptiles

Check. Snakes and lizards are reptiles. ✓

Method. Think about the spider.

1. Read the feature. A spider has 8 legs.
   8 legs
2. Write the answer.
   8

Check. Spiders have eight legs, and insects have six. ✓

Method. Think about the group of a frog.

1. Think about the features. A frog has moist skin, and it is an amphibian.
   amphibian
2. Decide. A frog is not a fish, so the answer is no.
   no
3. Write the answer.
   no

Check. Fish have fins and scales, and frogs do not. ✓

Method. Think about which animals feed their young on milk.

1. Think about each animal. Dogs and mice are mammals. A snail and a goldfish are not.
   mammals
2. Write the names. The two mammals are the dog and the mouse.
   Dog and Mouse
3. Write the answer.
   Dog and Mouse

Check. Snails are invertebrates, and goldfish are fish. ✓

Method. Think about the legs and body parts.

1. Read the features. An animal with 6 legs and 3 body parts is an insect.
   6 legs and 3 body parts
2. Write the answer.
   insects

Check. Spiders have 8 legs and 2 body parts. ✓

Method. Think about whether the rose has flowers.

1. Read the feature. A rose has flowers.
   flowers
2. Write the answer.
   flowering

Check. Ferns are non-flowering plants. ✓

Method. Read the table in section 2.2.

1. Find the bird feature. Birds have feathers and a beak.
   feathers and a beak
2. Find the fish feature. Fish have fins, scales and gills.
   fins, scales and gills
3. Write the answer.
   Accept feathers or a beak (bird), and fins, scales or gills (fish).

Check. Either feature for each group is correct. ✓

Method. Compare the two animals.

1. Look at the snail. A snail has a soft body, and no legs.
   soft body
2. Look at the spider. A spider has 8 legs and 2 body parts.
   8 legs and 2 body parts
3. Write the answer.
   Accept any sentence that says a snail has a soft body and no legs, and a spider has 8 legs and 2 body parts.

Check. The features are different, so the groups are different. ✓

Method. Think about the group of each animal.

1. Frog. A frog is an amphibian.
   amphibian
2. Lizard and snake. A lizard and a snake are both reptiles.
   reptile; reptile
3. Shark. A shark is a fish.
   fish
4. Write the answer.
   amphibian; reptile; reptile; fish

Check. Each animal has its own group. ✓

Method. Think about which animals have a backbone.

1. Look at each animal. A robin and a goldfish have a backbone.
   backbone
2. Name the two. A spider and an earthworm have no backbone.
   no backbone
3. Write the answer.
   Spider and Earthworm

Check. The spider and the earthworm are invertebrates. ✓