REPASO PRIMER TRIMESTRE NATURAL SCIENCES

•Scientists divide living things in five main groups:

• MONERANS, PROTIST, FUNGI AND PLANTS

• MONERANS, PROTIST, FUNGI, PLANTS AND HUMANS

• MONERANS, PROTIST, FUNGI,PLANTS AND ANIMALS

VERTEBRATES...

• Don´t have spine.

• Have a spine

• Have four legs

INVERTEBRATES...

• Don´t have a spine.

• Have a spine

• Have two wings.

We can classify vertebrates into five groups

• mammals, amphibians,birds, reptiles and fish.

• mammals, birds, reptiles, fish and insects

• mammals, amphibians, birds, reptiles and crustaceans.

Mammals

• Don´t have lugs to breathe.

• Have two legs.

• Have skin and fur.

REPTILES...

• Are viviparous

• have hard scales.

• don´t have legs.

FISH...

• breathe with their gills.

• have skin and fur.

• are viviparous

BIRDS...

• Don´t have skeleton.

• Have lungs and two extremities.

• Have aerodynamic bodies

AMPHIBIANS...

• Moist skin

• are viviparous

• have two ears.

Invertebrate animals are classified into ______ groups

• Five

• Seven

• Six