Life Processes, Cells & Classification   (Worksheet 6)

Invertebrates

Scientists use classification to sort all living organisms into groups. Animals are split into two groups - Vertebrates (animals with backbones) and Invertebrates (animals without backbones).

Invertebrates are split into six groups:

1.  Cnidarians
 
2.  Flatworms
 
3.  Roundworms
 
4.  Segmented worms
 
5.  molluscs
 
6.  Echinoderms
 

From the characteristics listed below, can you name the correct group within the Vertebrate classification?

1. They have a flat body and a mouth at one end.
 		   Answer:________
2. Their body is divided into segments.
 		   Answer:________
3. They have a shell and a muscular root.
 		   Answer:________
4. They have a long thread-like body.
 		   Answer:________
5. They have spiny skins and a pattern of five parts.
 		   Answer:________
6. They have sac-like bodies with tentacles.
 		   Answer:________