1. INVERTEBRATES

2. INVERTEBRATES
SPONGES

3. INVERTEBRATES
They have many pores through which they communicate

4. INVERTEBRATES
They eat through filtration.

5. INVERTEBRATES
POLYPS AND MEDUSAS

6. INVERTEBRATES
Polyps have the shape of a bag, they are joined by suction pads.

7. INVERTEBRATES
Medusas (jellyfishes) are umbrella- shaped.

8. INVERTEBRATES
They both eat meat (they are both carnivores).They both are marine creatures.

9. INVERTEBRATES
SEGMENTED WORMS: ANNELIDS

10. INVERTEBRATES
They are soft, long and segmented.

11. INVERTEBRATES
They breathe through their skin.

12. INVERTEBRATES
The most well known is the earthworm.

13. INVERTEBRATES
MOLLUSKS

14. INVERTEBRATES
Most of them are marine creatures

15. INVERTEBRATES
They are soft-bodied animals and have a muscular foot.

16. INVERTEBRATES
They have shells.

17. INVERTEBRATES
The most well known are: snails with spiral-shells

18. INVERTEBRATES
Mussels with two shells.

19. INVERTEBRATES
Squid with thin internal shell.

20. INVERTEBRATES
ARTHROPODS

21. INVERTEBRATES Main characteristics:
They have a segmented body with head, thorax and abdomen.

22. A hard case covers the body that they mould to grow.

23. They have jointed limbs

24. INVERTEBRATES
ARACHNIDS

25. INVERTEBRATES
Arachnids include scorpions and spiders.

26. INVERTEBRATES
The Arachnic's body is divided into two sections: cephalotorax and abdomen.

27. INVERTEBRATES
Cephalotorax: it's derived from the fusion of the head and the torax. All Arachnids have eight legs.

28. INVERTEBRATES
Abdomen: it isn't segmented and has silk glands to build a spider's web.

29. INVERTEBRATES
Crustaceans

30. INVERTEBRATES
They include crabs, lobsters and prawns.

31. INVERTEBRATES
They have very hard exoskeleton and their body is divided into two sections: cephalotorax and abdomen.

32. INVERTEBRATES
Cephalotorax with two pairs of anthenes and they usually have five pairs of legs.

33. INVERTEBRATES
Abdomen is segmented with small legs.

34. INVERTEBRATES
MYRIAPODS

35. INVERTEBRATES
They include terrestrial Arthropods like millipides and centipedes.

36. INVERTEBRATES
They have head and segmented body with a pair o two pairs of legs each segment.

37. INVERTEBRATES
INSECTS

38. INVERTEBRATES
They include: flies, butterflies, grasshoppers, ants, beetles and bees.

39. INVERTEBRATES
The insect's body is divided into head, thorax and abdomen.

40. INVERTEBRATES
The head has a pair of antennae.

41. INVERTEBRATES
Thorax with three pairs of legs and usually with two pairs of wings.

42. INVERTEBRATES
The abdomen is segmented without legs.

43. INVERTEBRATES
Insects have metamorphosis.