© Pearson Education Ltd Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. 1 Animals that have a supporting rod running along the length of their body are called chordates. In some chordates the supporting rod is bony. These animals are called vertebrates. Animals that are not chordates are all invertebrates. B1.2 Cloze summary answers

© Pearson Education Ltd Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. 2 Vertebrates can be divided into even smaller groups: mammals, reptiles, fish, amphibians and birds. All these animals differ in their outer coverings but are also divided into their groups according to whether: they can regulate their body temperatures (called homeothermy) or not they have gills to take oxygen out of water or use lungs to breathe air they lay eggs (they are oviparous) or give birth to live young (they are viviparous). B1.2 Cloze summary answers

© Pearson Education Ltd Copying permitted for purchasing institution only. This material is not copyright free. This document may have been altered from the original. 3 Some vertebrates have features more usually found in vertebrates of a different group, which can make them difficult to classify. B1.2 Cloze summary answers