IInvertebrates

11.- The main groups are: starfish and urchins.

6.- They have got a skeleton made of hard plates and spines

4.- They have got sof bodies and one or two shells.

1.- Their sac-like bodies are full of pores.

18.- They have got a hard skeleton

8.- They have got six legs and two antennae.

9.- They have got eight legs.

10.- They have got legs and a segmented body

15.- Some examples are scorpions and arachnids.

2.- They can live inside our bodies and caouse illnesses.

19.- They have got along bodies made up of many identical segments.

13.- Some examples are: bivalves, snails and octopuses.

20.- Some examples are: millipedes and myriapods.

17.- Some examples are: crabs, shrimps, prawns and woodilce.

12.- They have got jelly-like bodies that look like umbrellas

5.- They are the simples vertebrate

3.- They have got long and soft body.

7.- They have got articulated exoeskeleton

10.- They have got poisonous tentacles.

14.- Their bodies are divided into head, thorax and abdomen