Science - The Animal Kingdom

Invertebrates:    

Group Name: True Worms

Features:

1. Body is tubular.

2. Tube-like digestive system.

Examples:

- Earthworm

- Roundworm

Group Name: Flat Worm

Features:

1. Breathe through their skin.

2. Unsegmented body.

Examples:

- Tape Worm

- Monogenea

Group Name: Sponge

Features:

1. Takes water through pores in their bodies from which

they filter little bits of food.

Examples:

-Hexactinellid 

- Demosponges

Group Name: Cnidarians

Features:

1. Live in water.

2. Hollow body with specialized cells

that they use for catching prey.

Examples:

- Starfish

- Coral

Group Name: Molluscs

Features:

1. Most live in the sea.

2. Most have shells.

Examples:

- Squid 

- Bivalvia

Group Name: Echinoderms

Features:

1. A skeleton made up of five plates.

2. Tube Feet.

Examples:

- Crinoid

- Sea Urchin

------------------------------- Arthropods: ---------------------------

Jointed Legs.

Divided into four further sub-groups.

Group Name: Crustaceans

Features:

1. Most are aquatic.

2. Most breathe with gills.

3. Hard outer skeletons.

Examples:

- Krill

- Crab

- Fairy Shrimp

Group Name: Myriapods

Features:

1. Many pairs of legs.

2. Simple eyes.

3. A single pair of antennae.

Examples:

- Millipedes

- Centipede

- Symphyla

Group Name: Insects

Features:

1. One pair of antennae on their head.

2. Compound eyes. 

3. Three pairs of legs and two pairs of wings.

Examples:

1. Mosquito

2. Termite 

3. Bee

Group Name: Arachnids

Features:

1. No antennae.

2. Four pairs of legs and no wings.

3.Body divided into two parts.

Examples:

- Scorpian 

- Harvestmen 

- Acari