Year 7 Science - Classification

6. phylum of animals that are bilaterally symmetrical, well developed internal organs and a muscular foot
7. animals with radial symmetry, one body opening and stinging cells
10. bacteria and fungi responsible for the breakdown of wastes
14. animals that have a body covering of hair and feed their babies on milk produced by their mother
15. an organism that lives in another organism called a host
16. the level in the classification below class and above family
19. type of key with two choices at each stage
20. last level of classification of living things
21. the level under phylum in the classification of living things
22. phylum of the animal kingdom consisting of the sponges
23. animals with a nerve cord running down their back
24. scientist who specializes in grouping and naming things

1. animals with an exoskeleton and jointed limbs
2. radially symmetrical animals (e.g. starfish)
3. first level of classification
4. cannot be seen without the help of a microscope
5. building blocks of all living things
8. animals without backbones
9. phylum of the animal kingdom consisting of the round worms
11. animals with scales covering their body; ectotherms; most of which lay eggs with leathery shells
12. the science of grouping and naming things
13. process of putting things into groups
17. the second level of classification of living livings below Kingdom
18. a group name for any plant which grows where it does not belong