Animals without bones | Science | Quizalize & Oak National Academy

Starter quiz

Which of these living things that are found on Earth are animals?
- zebra ✓
- clown fish ✓
- sycamore tree
- tortoise ✓
- daisy
A human has different shapes and sizes of ______ to protect and support their body.
- 'bones' ✓
Which of these describes the properties of a bone?
- Bones are soft and flexible. They bend easily.
- Bones are hard and rigid. They don't break easily. ✓
- Bones are soft and rigid. They break easily.
All vertebrates have a...
- 'backbone' ✓
Where would you find a vertebrate's spine?
- In its feet.
- In its head.
- In its mouth.
- In its back. ✓
- In its wings.
Where is the skeleton of an animal that has an endoskeleton?
- on the outside of its body
- inside its body ✓
- next to its body
- underneath its body
- above its body

Do all animals have bones?
- Yes, all animals have bones.
- Some animals have bones. ✓
- Only humans have bones.
If an animal is an invertebrate, it doesn't have a...
- 'spine' ✓
Match the animal to its correct group.
- octopus
  
  ⇔
  
  invertebrate ✓
- snake
  
  ⇔
  
  vertebrate ✓
- worm
  
  ⇔
  
  invertebrate ✓
- lizard
  
  ⇔
  
  vertebrate ✓
- cuttlefish
  
  ⇔
  
  invertebrate ✓
- hedgehog
  
  ⇔
  
  vertebrate ✓
What is the scientific name for the hard layer, or covering, that protects some invertebrates?
- a shell
- its armour
- an endoskeleton
- an exoskeleton ✓
- a skeleton
Which of these animals has an exoskeleton?
- snake
- turtle
- snail ✓
- octopus
- worm
An invertebrate without an exoskeleton, has ______ inside its body instead of bones.
- 'fluid' ✓

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Some animals do not have any bones.
Animals that do not have bones, including a spine, inside their bodies are called invertebrates.
Some invertebrate animals have a hard layer or shell for protection on the outside of their bodies called an exoskeleton
Some invertebrate animals' bodies are filled with fluid, such as worms and jellyfish.

Pupils may believe if an animal has a head, extremities and an external skeleton it is a vertebrate.

Share images of lots of animals with exoskeletons and compare them to a knight that puts on armour to protect themselves from injury.

Invertebrates - Animals that do not have bones, including a spine, on the inside of their bodies are invertebrates.
Spine - The backbone of an animal is also called its spine.
Exoskeleton - An exoskeleton is the hard outer layer that covers, supports, and protects the body of an invertebrate.
Compare - We compare things by looking at what is the same and what is different.
Fluid - A fluid is a gas or liquid that moves freely.