1What are the similarities in the body structure of the butterfly, crab, prawn, spider and centipede?
2Where are these animals found?
3What is the outer covering of their body made up of?
4Why are these animals kept in phylum Arthropoda?
5What is the function of the hard cover in the bodies of the snail and similar molluscs?
6How do these animals sense the presence of an enemy and hide themselves inside the covering?
7How do molluscs move?
8Can the body of a mollusc be divided into two equal halves?
9Earthworms and leeches have segmented bodies. Why are they not arthropods?
10What is a cephalothorax? Name two animals that have one.
11Arthropods breathe in three different ways. Name them and match each to a suitable animal.
12Write any five characteristics of phylum Echinodermata.
13Give three differences between arthropods and molluscs.
14What is radial symmetry? Explain it with the example of a starfish.
15While collecting animals around the school, a student finds a small creature under a stone with a hard, segmented body and many pairs of jointed legs. Into which phylum should it be classified, and why?