The Animal Kingdom

The animal kingdom is divided into two phyla - vertebrates and invertebrates.
1. Complete the tables by:
(a) Filling in the missing words.
(b) Use a reliable reference source to find examples of each group.

Vertebrates ( 31 000 species )

 - Flounder

• Live in water
• breathe with gills
• moist skin covered in scales
• most lay eggs
• cartilage or bony skeleton
• cold blooded

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Amphibians ( 7000 species )

 - Salamander

Moist skin

Lay their eggs in water

Larvae breathe with gills

Adults breathe with lungs 

Adults live in the land 

Cold blooded

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Reptiles ( 10 000 species )

 -

- Lizard

• Dry, scaly skin
• Lay eggs
• Breathe with lungs
• Cold blooded

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Birds ( 10 000 species )

 

- Sun parakeets

• Covered in feathers 
• Lay eggs with hard shells
• Have wings
• Warm-blooded
• Breathe with lungs

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Mammals ( 5 500 species )

- Wolf

• Body covered in hair or fur
• Feed young on milk
• Warm-blooded
• Breathe using lungs

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Invertebrates

True worms ( 24 000 species )

- Annelid

• Body is tubular  and/or made up of segments
• Tube-like digestive system

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Flat Worms ( 12 000 species )

- Flukes

• Breathe through their skin
• Unsegmented body

Sponges ( 10 000 species )

 - Hexactinellida

• take in water through their pores(little holes) in their bodies from which they filter (take out) little bits of food

Cnidarians ( 9 000 species )

- Jellyfish

• Hollow body with specialized cells (stingers) that they use for capturing prey
• Live in water

Molluscs ( 100 000 species )

- Squid

• Most live in the sea
• Most have shells
• Unsegmented body

Echinoderms ( 9 000 species )

- Starfish

• A skeleton made up of five plates
• Tube feet
• Live in the sea  

Arthropods (1 000 000 species)

- Spider

• Jointed legs
• Divided into four further sub-groups

Crustaceans

- Crab

• Most are aquatic
• Body divided into three parts
• Most breathe with gills
• Hard outer skeletons

Myriapods

- Centipede

• Many pairs of legs
• A single pair of antennae
• Simple eyes

Insects

- Bee

• Body divided into three parts
• Three pairs of legs and two pairs of wings
• One pair of antennae on the head
• Compound eyes

Arachnids

- Scorpion

• Body divided into two parts
• Four pair of legs and no wings
• No antennae