Invertebrados – Cierto o falso

The video tutorial discusses invertebrates, focusing on their structural features. It explains that many invertebrates possess exoskeletons, while some marine invertebrates have hydrostatic skeletons, which are fluid-filled cavities surrounded by muscles.

What is a common feature of many invertebrates?

• They have a backbone.

• They possess an exoskeleton.

• They live on land.

• They are warm-blooded.

Which type of skeleton is often found in marine invertebrates?

• Cartilaginous skeleton

• Hydrostatic skeleton

• No skeleton

• Endoskeleton

What is a hydrostatic skeleton?

• A structure made of cartilage

• A fluid-filled cavity surrounded by muscles

• A skeleton made of bones

• A rigid external shell

Which of the following is NOT a characteristic of a hydrostatic skeleton?

• Surrounded by muscles

• Fluid-filled cavity

• Rigid and inflexible

• Found in some invertebrates

In which environment are hydrostatic skeletons commonly found?

• Forests

• Deserts

• Mountains

• Marine environments