The PowerPoint above is produced by the Young People’s Trust for the Environment.
It is quite large as it contains a lot of images but is well worth the wait.

Plants are divided into two main groups

  • Plants which make seeds: Flowering plants and conifers
  • Plants which do not male seeds: Mosses, ferns and algae.


Animals are divided into two main groups

Those with a backbone and internal skeleton (the vertebrates)
Those with no backbone and no internal skeleton (the invertebrates)

The Vertebrates
Often larger than the invertebrates, these animals all have bones in their body which support the skin and other organs

They are all warm-blooded which means that there body temperature does not change
eg The body temperature of a human is 37 °C

The vertebrates are separated into 5 smaller groups.
Each of these groups has special features which make them special

  • Fish
  • Reptiles
  • Amphibians
  • Birds
  • Mammals


FISH  eg:  Minnow, cod, shark, goldfish
These live in water and are usually streamlined in shape. Their bodies are covered in scales and they have fins to help them move. They usually lay eggs and they get their oxygen from the water through their gills. Some fish have soft bones called cartilage, for example the sharks. Cod and herring have hard bones.

AMPHIBIANS eg Frog, toad, newt
Some of these also live in water but most have to live in moist areas. This is because they get a lot of their oxygen through their skin, not just through their lungs. The young hatch from eggs in the water and they have gills. Frogs and toads are very similar. Newts have tails.

REPTILES eg Snake, lizard, crocodile, tortoise
Instead of moist skins the reptiles have dry, scaly skins. Most of them lay eggs, but not in the water. They use their lungs to get oxygen from the air. Tortoises live on land, but many turtles need to live in water. Crocodiles also like to live in water but can move fast on land. An adder is an example of a UK reptile.

BIRDS  eg Thrush, robin, eagle, owl
These have feathers instead of scales, except on their legs and feet. All birds have wings but not all can fly. The kiwi and the emu can’t fly, and neither can the penguin, but it can move fast in water. Ducks float on the water.

MAMMALS  eg Mouse, whale, dog, horse
These are all animals that suckle their young (feed them milk from the mother’s mammary glands). All mammals have hair or fur on their bodies. They are usually born alive although there are exceptions to this like the duck-billed platypus which hatch from eggs.

The Vertebrates
(Have an internal skeleton)
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Squirrel and bat: Mammals
Kestral: Bird
Roach: Fish
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Crocodile and snake: Reptiles
Frog: Amphibian


The Invertebrates
Usually smaller than the vertebrates these animals usually live in the soil or in water.
The have no bones although some have a stiff skin or a shell to give them shape or protection.

  • Insects
  • Arachnids
  • Molluscs
  • Annelids


INSECTS eg Ant, butterfly, earwig, fly
Insects always have six legs and three parts to their body.
Some insects have either one or two pairs of wings

ARACHNIDS (sometimes just called ‘spiders’) eg Spider, scorpion
Arachnids (or spiders) always have eight legs.
They have two parts to thir body and they never have wings.
Some spiders and scorpians have a poisonous bite or sting.

MOLLUSCS eg snail, slug, octopus
The molluscs have a muscular foot and a soft body.
They have no legs.
Some molluscs have shell

Annelids eg earthworm
The most well known example of an annelid is the earthworm.
They have a long thin body wich is divided into little rings (segments).
They usually live in the soil.

The Invertebrates
(Have no internal skeleton)

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Butterfly and ant: Insects
Spider: Arachnid
Snail: Mollusc


Using a key

A key is used to help identify an animal or plant

Look at the animals below and then identify them using the key below the images













In the key below you have a series of questions.

  1. Look at the question.
  2. Now look at the animal you are trying to identify and work out an answer.
  3. Follow the directions given by the correct answer
  4. In this kind of key always start at question 1


Questions in red
Possible answers in purple
What you do if the answer is correct – green
Solution Dark blue


1) Does it have a shell?

Yes Go to question 2
No Go to question 3


2)  What is the shape of the shell?

Pointed, and laying to the side of the body 
 – it is a   ANSWER

Rounded and on top of the body
– it is a   ANSWER


3) Does it have wings?

Yes – it is a   ANSWER
No Go to question 4


5) How many legs does it have?

0 legs – It is ANSWER
8 legs – it is a   ANSWER