What are a class of ecdysozoans?

Ecdysozoans are a big group of creatures that shed their skin or exoskeleton to grow bigger, like how you outgrow your favorite shirt and need a new one.

Imagine you're wearing a superhero suit, but it's too tight. You can't stretch it anymore, so you take it off and put on a bigger one. That’s what ecdyszoans do when they grow, they shed their old skin or shell and wear a brand-new one. This process is called molting.

Some ecdysozoans are like little bugs or spiders that live in your house. For example, insects, like ants or beetles, are part of this group. When they grow up, they leave their old skin behind and come out with shiny new ones, just like how a plant grows by getting bigger and needing more space.

A class is like a special team within the big group of ecdysozoans. One example is arachnids, that includes spiders, scorpions, and ticks. All these creatures shed their skin as they grow, just like you would if your superhero suit didn’t fit anymore.