Invertebrats 6è B

INVERTEBRATES(1)Biel Serra Rubio

and Marcel Boldu Fernandez

Index:The invertebrates.Description and parts. The life of invertebrates. Relation with humans.

Invertebrates are animals without a backbone, they are pluricelulars and eukaryotes. Are ovipars. There are such groups:Gastropods Bivalves Cephalopods InsectsArachnids CrustaceansMiriapods

Gasteropods

The gasteropods have five important parts:The mouthThe stomachThe shellThe anus andthe heart.

Bivalves

The parts of the bivalves are very similar than the parts of the gasteropods:

The mouthThe footThe shellThe mantleAnd the siphons (exhalant-inhalant)

CEPHALOPODS

The cephalopods are animals very weird. He have tentacles, and, there are many in each tentacle suckers.In this family are: octopus, sepia and squid. But are other animals of this family they have characteristics very similars.

INSECTS

lThe insects are commonslbecause they are alllthe world except the poles.lAre a lots of tipes of insects inlthe Earth, and therelapprloximalety 350.000 known species of insects.

Abdomen

Head

Thorax

Eyes

Antennae

ARACHNIDS

lIn the group of the arachnids are very few of species: lThe spiderslThe fleaslThe miteslAnd the scorpions.

CRUSTACEANSCrustaceans are canival, eat their own species. All crustaceans live in the sea and the rivers.He have a thin shell and freacualy a big Tweezers.

Antennae

Tweezers

AbdomenCephalothorax

MIRIAPODSThe miriapods tend to have many legs and are very weird. In this family of invertebrates are the:MillipedesScalopendraAnd centipedeTend to have a exoskeleton.

The life of the invertebratesGasteropods: Are herbivorous, do not usually live in extreme climates.

Bivalves: Usually live in beaches and the sea, and have a shell, some are carnivores and other herbivorous.

Cephalopods: They live in the sea, are carnivores and in cases of emergency can remove ink to confuse the predator.

Insects: Are very casuals in the world. Are carnivores and other are herbivorous and canivals. They have an exoskeleton.

Arachnids: Have eight legs and live in all the world.

Crustaceans: Live in the sea or the rivers. Have an exoskeleton.

Miriapods: Usually are biger than other invertebrates. Are carnivores.

THE RELATIONSHIP OF THE INVERTEBRATES WITH THE

HUMANS:There are many

species of invertebrates in the

world and this makes them quite typical animals in

our lives

In Asia some invertebrates are

typical food.

BIBLIOGRAPHIAll this information provides

from Internet

Conclusion:Something that has not

been an overnight.

Learning:There are many types of invertebrates and

they are all very different.

ByeTHANKS FOR WATCH