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Name 3 ways invertebrates are alike.
1. no backbone, 2. weak muscles, 3. small animals with soft bodies, 4. cold-blooded, 5. if they have a skeleton it's on the outside
What is an invertebrate?
An animal without a backbone
What is an animal without a backbone called?
Invertebrate
If invertebrates have skeletons, where are they located?
On the outside
Why do invertebrates move slowly on cold days and quickly on warm days?
They are cold-blooded
Name 3 examples of invertebrates
Jellyfish, starfish, clams, oysters, snails, octopus, insects, spiders, worms.
Which animal has 10 tiny hearts?
The earthworm
What are the sharp projections sticking out of the sides of earthworms called?
Setae
What is setae
Sharp projections sticking out of the sides of earthworms. It helps them hold tightly to the walls of its tunnel.
What is a tentacle?
A flexible limb of an invertebrate (like an octopus)
What are 3 ways an octopus defends itself?
1. camouflage, 2. spray ink, 3. jet propulsion
How is an octopus able to get away quickly?
It squeezes water through a special tube called a siphon.
What does camouflage mean?
changing color to match an environment or surroundings
This animal walks on special structures called tube feet
The starfish
How does a starfish eat?
It pushes its stomach out of its body, eats the food, then puts its stomach back.
How many arms does an octopus have?
8
