Unit 3 Natural Science

Which vertebratehas two lives?

Start

INDEX

GLOSSARY

BIG QUESTIONS

MINDMAP

MAMMALS

BIRDS

REPTILES

INVERTEBRATES

FISH

AMPHIBIANS

BIG QUESTIONS

Which groups of vertebrates have scales?

What are vertebrates?

Can you name the five different groups of vertebrates?

What's the difference between viviparous and oviparous animals?

Can we breath under water?

What is the largest group of animals on Earth?

GLOSSARY

VertebratesInvertebratesBackbone Carnivores Herbivores Omnivores Viviparous Oviparous

ArthropodsInsects Arachnics Myriapods Crustaceans Molluscs Gastropods Cephalopods Bivalves

MammalsBirds Reptiles Amphibians Fish

MINDMAP

MAMMALS

PHYSICAL CHARACTERISTICSMost mammals live on land They have four legs Some live in water (flippers to move) Most mammals have fur or hair

NUTRITIONCarnivores Hervibores Omnivores Drink their mother's milk

RESPIRATION Breath with their lungs

REPRODUCTION Almost all mammals are viviparous

BIRDS

RESPIRATION Breath with their lungs

NUTRITION Carnivores Hervibores Omnivores Adults feed their chicks

PHYSICAL CHARACTERISTICS Most birds can fly They have wings, a tail and feathers They have light, hollow bones All birds have a beak

REPRODUCTION Oviparous (lay eggs)

REPTILES

NUTRITION Carnivores Some are omnivores

RESPIRATION Breath with their lungs

PHYSICAL CHARACTERISTICS Have scales (camouflage, protection, prevent water evaporation) Most reptiles have arms and legs Other reptiles swim Snakes slither

REPRODUCTION Most reptiles are oviparous

AMPHIBIANS

NUTRITION Most amphibians are carnivores

REPRODUCTION Oviparous

Young amphibians do not look like their parents. They transform as they grow. This transformation is called METAMORPHOSIS

RESPIRATION Babies live in water and breathe with their gills Adults breath with their lungs and moist skin

PHYSICAL CHARACTERISTICS They have moist skin which absorbs oxygen

Some fish live in the sea or ocean (SALT WATER), other fish live in rivers and lakes (FRESH WATER)

FISH

RESPIRATION They take in the oxygen from water, using their gills

NUTRITION Carnivores Herbivores Omnivores

REPRODUCTION Almost all fish are oviparous They lay lots of eggs

PHYSICAL CHARACTERISTICS Fish have scales Scales act as armour (also help them swim, as do their fins)

INVERTEBRATES

ARTHROPODS Insects Arachnids Myriapods Crustaceans

MOLLUSCS Gastropods Cephalopods Bivalves