Evaluación de los animales invertebrados

What is a defining characteristic of vertebrate animals?

• They have an external shell.

• They have an internal articulated skeleton.

• They have no skeleton.

• They are always cold-blooded.

Which of the following is classified as a vertebrate?

• Snail

• Frog

• Ant

• Jellyfish

What is true about invertebrate animals?

• They all have a hard outer shell.

• They possess an internal skeleton.

• They do not have an internal skeleton.

• They are exclusively found in water.

Cuál de estos es un artrópodo

• caracol

• gusano

• hormiga

• estrella de mar