AMPHIBIANS

AMPHIBIANS

What are amphibians like?

-Are generally terrestials.

-They need to live near water or in very dump eviroment.

-They have very thin skin.

-Their skin contains many glands, in some spieces these glands produce venom.

-Most amphibians have 4 legs to move on land and to swim.

-They are ectothermic.

-All adults exhibit cutaneous respiration.

-Depending of the spieces, they breathe through gills or lungs.

NUTRITION

-They are carnivores.

-They trap small animals with their tongue swallow them whole.

-The larvae of some species are omnivores, they eat vegetable matter and microorganisms.

REPRODUCTION

-Their reproduction is sexual.

-Some of them are oviparous.

-They lay their eggs in water.

-The eggs do not have impermeable shell.

-Larvae hatch from the eggs and then become

adults though a process of metamorphosis.

For example frog metamorphosis:

THE MAIN TYPES OF AMPHIBIANS

The main types of amphibiand are ANURANS

and URODELES.

The main types of amphibians are ANURANS

and URODELES.

ANURANS

-Have a short body without a tail.

-Their hind legs are longer are longer than the

front legs because of jumping.

-In some species the toes on the hind feet are joined together by interdigital webbing.

URODELES

-Have a long body with a tail.

-They have 4 short legs.

-They are all the same length.