fish

Question 1

What is the operculum?

Answer 1

Hard bony flap covering gill slits in fish

Question 2

What is the swim bladder?

Answer 2

A gas filled sac in fish used to maintain buoyancy and sometimes hearing in some species

Question 3

What are the gills?

Answer 3

Organs that exchange oxygen and carbon dioxide with water

Question 4

What are gill rakers?

Answer 4

Long gill processes that trap plankton while the fish swims with its mouth open

Question 5

What are gill filaments?

Answer 5

Help with gas exchange

Question 6

What is osmosis?

Answer 6

The movement of water molecules through a semi-permeable membrane from a dilute to concentrated solution

Question 7

What is diffusion?

Answer 7

Moving molecules from a region of high concentration to low

Question 8

How do fish survive in salt water?

Answer 8

Using osmoregulation : a process which regulates the salt and water concentrations in a fish’s bodily fluids

Question 9

What is counter current exchange?

Answer 9

Transferring a substance enriched in one pool of fluid to another pool that has a much lower concentration of that substance eg, blood flows opposite direction to water (water has a higher oxygen concentration than blood therefore maintaining a steep concentration gradient)

Question 10

Which variable goes on x axis?

Answer 10

Independant

Question 11

Which variable goes on the y axis?

Answer 11

Dependant

Question 12

What is fertilisation?

Answer 12

When one parent produces sperm and another produces and egg. The egg and sperm fuse to produce a cell (zygote) that can divide and develop into young

Question 13

What is sexual selection?

Answer 13

Natural selection because of attractive characteristics eg. male guppies are colourful to attract females

Question 14

What does oviparous mean?

Answer 14

When eggs develop outside the mother’s body

Question 15

What does ovoviviparous mean?

Answer 15

When the egg develops and hatches within the mothers uterus

Question 16

What does viviparous?

Answer 16

When the mother gives live birth

Question 17

What taxonomic group are fish part of?

Answer 17

Animal

Question 18

What are classification features of animal kingdom?

Answer 18

Have a nucleus, multicellular, eukaryotic

Question 19

What phylum are fish part of?

Answer 19

Vertebrates

Question 20

What are the classification features of vertebrates?

Answer 20

Animals with spines

Question 21

What class are fish part of?

Answer 21

Fish

Question 22

What are the classification features of fish?

Answer 22

Gills, scales, cold blooded, lay eggs, have fins

Question 23

Key features of cartilaginous fish?

Answer 23

Exposed gills, no swim bladder, unequal caudal fins, bones made of cartilage

Question 24

Key features of bony fish?

Answer 24

Covered gills (have operculae), swim bladder, equal caudal fins

Question 25

Example of cartilaginous fish?

Answer 25

Sharks, rays

Question 26

Example of bony fish?

Answer 26

Salmon

Question 27

What is the word equation for respiration?

Answer 27

Oxygen + glucose -> carbon dioxide + water

Question 28

When the mouth is open is the operculum opened or closed?

Answer 28

Closed

Question 29

Describe the process of respiration?

Answer 29

The mouth opens (operculum is closed) snd water rushes into the mouth and down a pressure gradient, the mouth then closes (opening the operculum), then the water moves from the buccal cavity over the gills into the opercular cavity then rushes out of the fish through the operculum

Question 30

What is respiration?

Answer 30

The gas exchange in and out of a cell

Question 31

How are gills adapted to maximise oxygen absorption from water?

Answer 31

Lots of gill filaments and larger surface area for oxygen obsorbtion