Invertebrate warriors

The video discusses invertebrates, focusing on their lack of a backbone and the presence of exoskeletons. It highlights ants as an example of insects with exoskeletons, explaining their structure and function. The video also covers the challenges faced by crustaceans like spider crabs, which must shed their exoskeletons to grow, leaving them vulnerable until a new shell forms.

What characteristic do invertebrates like ants share?

• They have a soft outer layer.

• They have a backbone.

• They have an exoskeleton.

• They have four pairs of legs.

How many body parts do ants have?

• Two

• Three

• Four

• Five

What is one function of an exoskeleton?

• It restricts movement.

• It provides protection.

• It makes the organism heavier.

• It absorbs nutrients.

Why do spider crabs need to shed their shells?

• To hide from predators.

• To grow larger.

• To change color.

• To become lighter.

What happens to a crab after it sheds its shell?

• It changes species.

• It no longer needs a shell.

• It immediately grows a new shell.

• It becomes vulnerable until a new shell grows.