groups of vertebrates

Animals with skeleton inside their bodies are called ...................................

• vertebrates

• invertebrates

• insect

........................................ is one of the animals that don't have skeleton at all

• jellyfish

• snail

• crab

Some invertebrates have outside ..........................

• shell

• bones

• blood

we can sort the vertebrates to ..................... groups

• five

• four

• three

Animals that can give birth and feed their young milk are .......................

• mammals

• fish

• reptiles

reptiles and amphibians can

• give birth

• lay egg

• not reproduce

Fish and reptiles have ........................... skin

• scaly

• smooth

• soft

..................... their bodies are covered with feather.

• birds

• fish

• amphibians

Young amphibians breathe by .......................

• gills

• lung

• nose

The frog can lay its egg ..............................

• on the land

• in the air

• in water