Text 2. Fish Evolution

1. First fish have ……., but didn’t have ……….

a) scales, rays c) lungs, teeth

b) fins, jaws d) teeth, jaws

2. Fish take oxygen from the water through ….

a) fins c) lateral line

b) gills d) scales

3. Oxygen passes from the water into ……..in the gills.

a) isthmus c) openings

b) blood vessels d) coverings

4. The powerful tail of shark carries a ……….fin.

a) caudal c) dorsal

b) pectoral d) pelvic

5. Because this type of fertilization occurs outside the body of the female fish it is called …………fertilization.

a) internal c) inside

b) external d) outside

6. The same fish usually ………..in both fresh and salt water.

a) can live c) may live

b) cannot live d) didn’t live

7. Changes in fish ………..can affect their body temperature.

a) environment c) fertilization

b) anatomy d) feeding

8. Female fish release jelly-coated eggs into the water and male fish release sperm to ……..the eggs.

a) feed c) fertilize

b) live on d) coat

9. Tiny animals first appeared in the earth's oceans were the first ………..with no jaws but fins and backbones.

a) mammals c) reptiles

b) vertebrates d) lizards

10. Fish have little trouble maintaining a constant body temperature as long as they remain in their ………waters.

a) ocean c) native

b) river d) severe

Text 3. Fish

1. A sac filled with air that the fish can deflate or inflate is called……..

a) swim sac c) swim bladder

b) swim fin d) yolk sac

2. Fish are able to adapt to the………..

a) environment c) anatomy

b) arrangement d) vertebrates

3. …… can live in mud without water to survive during hot and dry season.

a) lungfish c) perch

b) remora d) electric eel

4. The remora uses a sucker to attach itself to a …….and feeds on bits of food the ……..leaves behind.

a) perch c) whale

b) shark d) catfish

5. The ………can generate large amounts of electricity to stun its prey.

a) shark c) remora

b) lungfish d) electric eel

6. …………..is able to change colour to match the ocean bottom.

a) perch c) remora

b) shark d) flounder

7. …………have adaptations that allow them to come out of the water and spend some time on land.

a) salmon, perch c) shark, trout

b) mudskipper, walking catfish d) catfish, trout

8. Being able to change its color, … can save itself from being attacked by its predators.

a) trout c) shark

b) flounder d) lungfish

9. By letting air in and out of the bladder, a fish can float at ………in the water.

a) high level c) any level

b) low level d) average level

10. In the most species female release …………..into the water.

a) jelly-coated eggs c) sperm

b) eggs d) fertilized eggs