2 All animals can be classified as belonging to one of two groups: Those with backbones.Those without backbones.
3 Animals without backbones are called INVERTEBRATES. There are many different types of invertebrates such as:spongesanemone, jellyfishwormssnails, clams and octopusesstarfishinsects, spiders, ticks
4 ArthropodsInsectsThey have got three main body parts: the head, the thorax and the abdomen.They have got six legs and two antennae.Many insects have got wings like the butterfly, fly, bee, ant......
5 Arthropods Arachnids They have got eight legs. They haven't got antennae.They can live in land or fresh water.Some examples of arachnids are spiders, scorpions, mites and ticks.
6 Snails and slugs They have got soft bodies. They haven't got legs. They have got two antennae.Snails have also got a shell.
7 Worms They have got soft bodies. They haven't got legs, a shell or atennae.They can be flat, round or segmented.Earthworms live under the ground.
8 Most invertebrates lay eggs. They're oviparous creatures. The mother lays lots of eggs.The larvae come out of the eggs.The larvae become adults.The larvae grow and change.
9 Some insect larvae change a lot when they grow. METAMORPHOSIS1. A butterfly lays eggs.2. The butterfly larvae come out of the eggs.3. The larvae are called caterpillars. They eat lots of leaves.4. The caterpillar makes a special covering. It's called a cocoon.5. When they come out of the cocoon, they're butterflies.