Zoology Unit 6

Question 1

What is the endoskeleton of an echinoderm made of?

Answer 1

ossicles, calcium carbonate

Question 2

coverings of cartilaginous fish vs bony fish

Answer 2

cartilaginous fish have denticles, bony have scales

Question 3

Osmoregulation vs thermoregulation

Answer 3

osmoregulation is balancing water and salt. thermoregulation is balancing body heat

Question 4

What are the three fish groups?

Answer 4

jawless, cartilaginous, bony

Question 5

Types of jawless fish

Answer 5

lamprey

Question 6

Types of cartilaginous fish

Answer 6

sharks, rays

Question 7

Types of bony fish

Answer 7

carp, eels, salmon

Question 8

What are the functions of fish fins

Answer 8

movement, balance

Question 9

How do sea stars eat?

Answer 9

evert stomach, digestive fluids

Question 10

fish evolution

Question 11

symmetry of echinoderm larvae and adult echinoderms

Answer 11

larvae have bilateral, adult have pentaradial

Question 12

What is the purpose of the lateral line in fishes

Answer 12

sensing position in the environment, spatial awareness

Question 13

Freshwater vs saltwater: drinking water

Answer 13

freshwater fish don’t drink, saltwater fish drink

Question 14

Freshwater vs saltwater: interact with salt

Answer 14

saltwater excrete salt and have lower inner salinity. freshwater take up salt and have higher inner salinity

Question 15

freshwater vs saltwater: concentration of nitrogen waste

Answer 15

saltwater is concentrated to get rid of salt. freshwater isn’t concentrated to keep salt

Question 16

where are echinoderms found?

Answer 16

aquatic/marine

Question 17

four characteristics shared by chordates

Answer 17

notochord, dorsal nerve chord, pharyngeal pouches, post anal tail, endostyle

Question 18

senses of bony fishes

Answer 18

ears for hearing and motion, eyes for vision

Question 19

major echinoderm groups

Answer 19

crinoidea, ophiuroidea, holothuroidea, asteroidea, echinoidea

Question 20

crinoidea characteristics

Answer 20

calyx, stalked crinoid

Question 21

ophiuroidea characteristics

Answer 21

slender arms

Question 22

holothuroidea characteristics

Answer 22

Cuvierian tubules

Question 23

asteroidea characteristics

Answer 23

5 arms

Question 24

echinoidea characteristics

Answer 24

noticeable spikes, round

Question 25

what can be inferred from the body shape of a fish

Answer 25

environment

Question 26

how many chambers do fish hearts have

Answer 26

4

Question 27

etymology for deuterostome

Answer 27

second mouth

Question 28

etymology for echinodermata

Answer 28

spiny skin

Question 29

etymology for chordata

Answer 29

chord

Question 30

endothermy vs exothermy

Answer 30

endothermy: maintain body temp
exothermy: body temp depends on environment

Question 31

functions of echinoderm water vascular system

Answer 31

movement, food and waste transportation, respiration

Question 32

protostome vs deuterostomes

Answer 32

protostomes: mouth forms first, coelom starts lower
deuterostomes: anus forms first, coelom starts higher

Question 33

three chordate subphyla

Answer 33

vertebrata, urochordata, cephalochordata

Question 34

vertebrata echinoderms

Answer 34

sea urchins, sea cucumbers, sand dollars

Question 35

urochordata echinoderms

Answer 35

tunicate

Question 36

cephalochordata echinoderms

Answer 36

lancelet

Question 37

asteroidea organism

Answer 37

sea stars

Question 38

holothuroidea organism

Answer 38

sea cucumber

Question 39

echinoidea organism

Answer 39

sea urching, sand dollar

Question 40

ophiuroidea organism

Answer 40

brittle stars

Question 41

crinoidea organism

Answer 41

sea lilies