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Flashcards in Phylum Chordata Deck (125)
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1

What are the four things required to be a chordate?

Tubular Nerve Core
Notocord providing nerve core support
Pharyngeal gill pouches
Post anal tail

2

What does Ontogeny recapitulates phylogeny during embryonic development mean?

Means through development, we look like the evolutionary development to how we got to be human

3

What are the 3 SubPhylums of Phylum Chordata?

Urochodata
Cephalochordata
Vertabrata

4

What makes up Subphylum Urochordata?

Sea Squirts

5

Why are Sea Squirts sometimes called Tunicates?

Because they have a cellose tunic or cover

6

Why are they called Sea Squirts?

Due to filter feeding and squirting water back out

7

Sea squirt larvae are unique because?

The Larvae has chordate characteristics, but they do not develop into adulthood, so they are considered chordate relative

8

What makes up Subphlyum Cephalochordata?

Lancets

9

Why are they called Lancets?

Because of the shape of the body

10

What are Lancets gill slits used for?

Filter feeding

11

How do lancets breathe?

O2 is absorbed through skin.
No lungs

12

What makes up Subphylum Vertabrae?

over 44,000 Species of Vertabrae

13

What is a characteristic of Vertabrates?

Endoskeleton w/skull that encases brain

14

What were Ostraderms?

Earliest fish

15

What is Ichthyology?

Study of fish

16

Class chondrichthyes are made up of?

The cartilaginous fishes

17

What are the cartilaginous fishes?

Sharks, Rays, Skates, Fishes

18

Sharks have a large upper __________ on __________ fin

Sharks have a large upper lobe on caudal fin.

19

What are dermal denticles?

Sharp scales on skin

20

How do sharks breathe?

Respire with gills and spiracles.

21

When hearing the world spiracles, what should you think of?

Breathing

22

How many off spring do sharks produce?

Few

23

Male sharks have?

Claspers used to grab onto female during maiting

24

Claspers are also found on
?

Insects

25

What is the World's largest fish?

Whale Shark

26

What is the world's largest fish predator?

Great White Shark

27

What is the largest ray?

Manta Ray

28

What is a 'rat fish'?

A chimara

29

What kind of organism is a chimara?

Transition organism to the bony fish

30

What makes up class Actinopterygii?

Ray fin