INVERTEBRATES

SYMMETRY

ASYMMETRY

PORIFERA

ARTHROPODS

BILATERAL SYMMETRY

MOLLUSC

ECHINODERMS

WORMS

YOU CAN DIVIDED THE SYMMERYS I N:

ANNELIDS

WITHOUT SKELETON

CNIDARIANS

PORIFERA AND CNIDARIANS

THEY PERFORATED BY TINY PORES

THE SKELETON IS MADE UP BY SPONGIN

THE FILTRATION THE WATER IN TUBES TO CARRYING THE ORGANISM AND THE NUTRIENTS

CAN HAVE CALCAREUS OR PARTS

THE PORIFERA :

WITH SKELETON

CNIDARIANS

THE POLIPS HAVE A SAC-LIKE

THE POLIPS HAVE HA FORM SAME A SUCTION CUP TO HOLD ON TO THE SUBSTRATE.

THEY HAVE TENTACLES

THE JELLIFISH HAVE A UMBRELLA - SHAPED BODY . TO LOOK LIKE INVERTED .

EXAMPLE JELIFISH AND POLIPS

LIKE POLIPS THE JELLIFISH HAVE A HOLE THAT SERVES AS MOUTH AND ANUS .

THE CNIDARIANS ARE CARNIVOROUS

WORMS

IN THIS GROUP THERE ARE THE ANNELIDS, NEMATODES AND PLATHIHELMITES.

THERE ARE BRITLISES BETWEEN THE METAMERES THEY REPRODUCE SEXUALLY AND THEY HAVE CROSS FERTILIZATION

ANNELIDS THEY ARE ALSO RINGED WORMES

BRISTLE WORMS - RAG WORMS - LUGWORMS

THEY HAVE A CILINDRICAL BODY,METAMERES

MOLUSC

THEY ARE AQUATICS

HERMAPHRODITES- METARMOPHOSIS-OVIPARUS

THEY ARE GASTHROPODS CEPHALOPODS BIBALVES

SINGLE SPIRAL-SHAPED SHELL-FOUR TENTACLES - RADULA - SHELL TWO VALVES-

THEY HAVE A BILATERAL SYMMETRY, SOFT BODY , HEAD VISCERAL MASS,MOSCULAR FOOT , MANTLE SHELL, MOUTH AND GLANDS,GILLS, LUNGS, OPEN CIRCULATORY SYSTEM,BRAIN SENSE ORGANS,

EQUINODERMS

STAR FISH

THEY HAVE A RADIAL SYMMETRY - DERMAL SKELETON-AMBURACAL APARTUS-METAMORPHOSIS REGENERATION-OVIPARUS.

ARTHROPODS

EXOSKELETON - MOULTING - SEGDMENT BODIES-HEAD THORAX ABDOMEN CHELICEREAE-CEPHALOROTHORAX PEDIPALPS LEGS

PREDATORS

ARACNIDS - CRUSTACEANS - MYRIAPODS - INSECTS