1) What do fish use to breathe? a) Lungs b) Gills c) Skin d) Fins 2) Where are a fish’s gills found? a) On its tail b) On its fins c) Behind its mouth d) On its back 3) What covers the gills of a fish? a) Scales b) Gill cover c) Fins d) Skin 4) How does oxygen get into a fish’s body? a) Through its skin b) Through its fins c) From water passing over the gills d) By breathing air 5) What happens when a fish opens its mouth? a) Water leaves the body b) Water enters the body c) Oxygen leaves the blood d) Food is digested 6) Where does water leave a fish’s body after passing the gills? a) Mouth b) Nose c) Gill openings d) Tail 7) What do fins help fish to do? a) Breathe b) Hear c) Swim and balance d) Smell 8) Why do eels wriggle their whole body? a) They have no tail b) They have very small fins c) They cannot swim d) They have no bones 9) Most fish lay their eggs where? a) On land b) In nests c) Floating freely in water d) Inside plants 10) Do parent fish usually look after their eggs? a) Always b) Sometimes c) Only sharks d) No 11) What provides food for a baby fish inside the egg? a) Water b) Plants c) Yolk d) Sand 12) When do fish usually eat? a) At the same time every day b) Only at night c) When food is available d) Once a week 13) Which of these is not a fish? a) Jellyfish b) Shark c) Perch d) Carp 14) Why are some fish coloured? a) To attract humans b) To stay warm c) To camouflage from enemies d) To see better 15) Whales and dolphins are not fish because they are: a) Reptiles b) Birds c) Mammals d) Amphibians 16) How many main groups of fish are there? a) Two b) Three c) Four d) Five 17) Which of these is a bony fish? a) Shark b) Ray c) Perch d) Lamprey 18) What is the skeleton of sharks and rays made of? a) Bone b) Shell c) Gristle (cartilage) d) Scales 19) What special feature do lampreys use for feeding? a) Sharp teeth b) Beak c) Sucker disc d) Tongue 20) What is the lateral line used for? a) Breathing b) Seeing c) Detecting movement in water d) Feeding

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