ANIMALS

OCTOBER 21 st / 09

ANIMALS


The animal kingdom is made up of organims that have the following characteristics.

They have eucaryotics cells organised into tissues are organised into organs like, for example, muscles.
They are consumers. Unlike plants, animals have to take food from their environment.



ANIMALS CLASSIFICATION

animales can be classified into herbivories, carnivories and obnivories according to their food.
Animals can be classified into oviparous or viviparous according to their embryonic debelopment.

Oviparous: develop inside eggs.
Viviparous: develop inside their mother's wombs.



Animals can be classified according to the environment they live in. They can be land or water creatures.

We can classify animals according to whether they have a skeleton. Thet is we can classify them into invertebrates and vertebrates.

Invertebrates: all the animal thets do not have a internal skeleton with a spin. Those are divided into smaller groups:

poriferan
coelenterates
worms
arthropods
molluscs
equinodermas


vertebrates: all animals thats have an internal skeletonwith a backbone those are divided into five smaller groups:

fish
amphibians
reptiles
birds
mammals