Chordates

Question 1

when did chordates evolve

Answer 1

chamberlain explosion

Question 2

derived traits of chordates

Answer 2

Question 3

Answer 3

notochord

Question 4

adaptive functions of the notochord

Answer 4

Question 5

Answer 5

dorsal hollow nerve chord

Question 6

what was the dorsal hollow nerve chord before

Answer 6

ventral tubes

Question 7

what was the first pharyngeal slit

Answer 7

ear canal

Question 8

what forms jaws

Answer 8

pharyngeal slit and arches

Question 9

what are the chordate sub groups

Answer 9

cephalochordates
urochordates
craniates

Question 10

what are the cephalochordates characteristics

Answer 10

Question 11

are cephalochordate vertebrates or invertebrates

Answer 11

invertebrates

Question 12

are urochordates vertebrates or invertebrates

Answer 12

invertebrates

Question 13

what is an example of a urochordates

Answer 13

tunicates

Question 14

what are the craniates characteristics

Answer 14

have a skull
2 sets of hox genes

Question 15

are craniates vertebrates or invertebrates

Answer 15

vertebrates except mixini

Question 16

how do you differ species apart

Answer 16

look at the teeth

Question 17

how do vertebrates split up

Answer 17

jaws and no jaws

Question 18

what are the two vertebrate groups with no jaw called

Answer 18

Question 19

fish known for first dental elements

Answer 19

conodonts

Question 20

what do fish with jaws also have

Answer 20

fish have a lateral lined system series of canals filled with water and tube in epidermis that runs lateral

Question 21

what are the vertebrate groups with jaws called

Answer 21

Question 22

first fish with a jaw

Answer 22

gnathostomes

Question 23

called armed fish (strongest bite)

Answer 23

placoderms

Question 24

example sharks skates rays

Answer 24

Chondrichthyes

Question 25

cartilaginous fish

Answer 25

Chondrichthyes

Question 26

important feature of Chondrichthyes

Answer 26

ampullae of lorezini

Question 27

what are ampullae of lorezini

Answer 27

cells then detect electrical impulses

Question 28

what does the lateral line nerve do?

Answer 28

feel the pressure of the water and calculates the difference of water pressure to alert the fish of movement

Question 29

bonyfish

Answer 29

Osteichthyes

Question 30

what are the groups of Osteichthyes

Answer 30

Question 31

ray finned fish

Answer 31

actinopterygii

Question 32

lobed (wing) finned fish

Answer 32

sarcopterygii

Question 33

first fish to have a swim bladder

Answer 33

actinopterygii

Question 34

first fish to have a lung

Answer 34

Dipnoi

Question 35

how to make a swim bladder a lung

Answer 35

Question 36

what does actinopterygii dominate

Answer 36

open water

Question 37

what does sarcopterygii dominate

Answer 37

coastal and wetland

Question 38

what are lungs to fish

Answer 38

a derived trait

Question 39

what is a lung made from

Answer 39

a swim bladder

Question 40

first tetrapods

Answer 40

amphibia

Question 41

what type of species are amphibia

Answer 41

indicator

Question 42

what are amphibia called

Answer 42

canary in the coal mine

Question 43

what was the first thing needed to fully go on land?

Answer 43

amniotic egg

Question 44

Answer 44

amnion

Question 45

Answer 45

allantois

Question 46

Answer 46

chorion

Question 47

Answer 47

yolk sac

Question 48

what to know about reptiles

Question 49

what are the only two groups that are derived from amphibia

Answer 49

reptiles and mammals

Question 50

what did reptiles give rise two

Answer 50

birds

Question 51

what are reptiles scales made out of

Answer 51

keratin

Question 52

what bone structure does reptiles have?

Answer 52

honey comb

Question 53

endothermic

Answer 53

generating heat and losing it to the system

Question 54

ectothermic

Answer 54

gaining heat from environment

Question 55

homeothermic

Answer 55

maintaining consistent body temp

Question 56

poikilothermic

Answer 56

fluctuates in body temp

Question 57

what are the derived traits if mammals

Answer 57

milk and fur

Question 58

what were the first mammals

Answer 58

Prototheria

Question 59

first true mammals

Answer 59

Eutheria

Question 60

what are the two mammal groups

Answer 60

Eutheria Prototheria

Question 61

benefits of internal development

Answer 61