Invertebrate animals

Animals are invertebrate because:

• They have a spinal cord

• They do not have a spinal cord

• They have a spinal column

What are the name of invertebrate groups ?

• Mammals, molluscs, porifera, coelenterates and annelids

• Arthropods, fish, molluscs, porifera, coelenterates and annelids

• Arthropods, molluscs, porifera, coelenterates and annelids.

• Mammals, birds, porifera and annelids.

Starfish is clasified into this group

• Porifera

• Arthropods

• Echinoderms

• Molluscs

Leeches and worms are

• Coelenterates

• Annelids

• Molluscs

• Poriferas

Some of the characteristics of invertebrate animals are:

• They have a spinal cord

• They don´t have a spinal cord.

• They are oviparous

• Most of them hatch from an egg

MOLLUSCS

• Have soft bodies

• Have a hard shell

• Have some tentacles

• Absorb oxygen through gills