Download - Invertebrates presentation
SCIENCEPRESENTATION
Created by:
Gerard Casacuberta MoragasLluís Pla Vilabella
The invertebrates are animals without backbone with intern skeleton
INVERTEBRATESPORIFERA
CNIDARIA
ANELLIDS
MOLLUSCS
ARTHROPODS
ECHINODERMS
JELLYFISHES
POLYPS
POLYCHAETES
TUBIFIDS WORM
HIRUDINEANS
GASTROPODS
CEPHALOPODS
BIVALVES
CRUSTACEANS
MYRIAPODS
ARACHNIDS
INSECTS
The porifera are aquatic animals that they can filter water with two little holes that are called osculums.
Cnidaria are invertebrates that present tentacles with stinging cells.
Cnidaria are divided in 2 groups: The jellyfishes and polyps.
They have stinging cells in their tentacles they also have an umbrella form in their bodies
They live in colonies and they present stinging cells. Their body form is like a sack
Annelids are aquatic and land animals. They are divided in 3 groups.The Polychaetes, the Tubifids worms and the Hirudineans.
They can present setae and clitel.
Polychaetes are annelids with setae
Tubifids worms are annelids with clitel and setae
Hirudineans are annelids with clitel
The molluscs have got a soft body and are protected by a shell.They are divided in 3 groups: gastropods, cephalopods and bivalves
The gastrophods have a prominent head and a highly developed shell
The cephalopods have the head and feet highly developed
Bivalves have got two valves
The arthropods are terrestrial and aquatic animals.They are divided in 4 groups: crustaceans, myriapods, arachnids and insects.
Their body is generally divided into three parts: head, thorax and abdomen.
They have two antennae and two jaws and the four maxillary
They are terrestrial arthropods with body divided in two parts: cephalothorax, abdomen
They have three body parts: head, thorax and abdomen.They have three pairs of legs and usually two pairs of wings.
The echinoderms are marine animals and they move slowly through the rocks, sand, etc.
CURIOSITIESThe ants allow other species to survive: fan and remove the soil, spread seeds and eat some, enriching the fertility of
soil which is almost deserted.