Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Bio 202 Exam > 1 - Vertebrates > Flashcards

1 - Vertebrates Flashcards

You may prefer our related Brainscape-certified flashcards:
Biology 101 flashcards
1
Q

What lead to the vertebrates

A

Phylum chordata, subphylum craniata, infraphylum vertebrata

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Vertebrate 5 characteristics

A
  • Largest, most successful chordates
  • Bony/cartilaginous vertebrae replace notochord
  • 3 part brain
  • Skull/cranium
  • abundant fossil record
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Why study vertebrates

A
  • Earth’s fossil history
  • conservation issues
  • human ancestry/biology
  • intricate design questions
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

8 classes

A
  • mammalia
  • aves
  • reptilia
  • amphibia
  • sarcopterygii (may contain the first 4)
  • actinopterygii
  • chondrichthyes
  • Petromyzontida
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Phylum chordata 3 subphyla

A
  • lancelets/cephalochordata
  • urochordata
  • craniata
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Subphylum craniata 2 infraphyla

A
  • hyperotreti (notochord)

- vertebrata

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Phylum chordata 5 main characterisistics

A
  • Notochord
  • pharyngeal slits
  • tubular nerve chord
  • post-anal tail
  • endostyle (thyroid gland)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Notochord

A

supportive/flexible rod dorsal to body cavity

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Pharyngeal slits

A
  • openings between digestive tract and outside of body
  • form of pouches
  • filter feeding or gills develop for gas exchange
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Tubular nerve chord

A

dorsal notochord extended anteriorly into brain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Post-anal tail

A

extends posteriorly beyod anal opening

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Endostyle (thyroid gland)

A
  • ventral aspect of pharynx
  • secretes mucus used in filter feeding
  • transformed to thyroid gland in adult lampreys and other chordates
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Evolution of humans

A

5 mya

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Cambrian explosion/first chordates

A

490-543 mya

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Jawed fishes diversity + first amphibians

A

400 mya

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

3 extra characteristics not just unique to chordata

A
  • bilaterally symmetrical deuterostomes
  • complete digestive tract
  • heart (ventral, contractile blood vessel)
17
Q

Subphylum urochordata 3 classes

A

ascidiacea, appendicularia, thaliacea

18
Q

Subphylum cephalochordata

A 
lancelets
shallow marine substrates
partially buried filter feeders
notochord extends into head
segmentally arranged muscles on either side of notochord
oral hood with cirri
19
Q

Oldest chordate fossil

A
  • Haikonella
  • from china
  • 530 mya
20
Q

Bigger + smaller compared to invertebrates

A

Smaller: less than 5% of species, diversity/biomass, breadth of distribution, number of niches occupied, evolutionary persistence
Bigger: body size diversity/max size, brain size/cognitive performance

Bio 202 Exam (12 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions