Lab 11 - Chordata I Flashcards
four characteristics of Chordata
- dorsal hollow nerve cord
- notochord
- pharyngeal gill slits
- post-anal tail
coccyx
post-anal tail
pharyngeal slits
jaw and middle ear bones
notochord
intervertebral discs
dorsal hollow nerve cord
well developed spinal nerve
Chordata has these Subphylum (3)
- Urochordata
- Cephalochordata
- Craniata
Subphylum Craniata contains these Clades (In Chordata 1) (3)
- Vertebrata
- Gnathostomata
- Osteichthyes
Craniata contains these Classes (4)
- Myxini
- Petromyzontida
- Chondrichthyes
- Actinopterygii
Subphylum Craniata Class Myxini has what kind of animals?
hagfish
Subphylum Craniata Class Petromyzontida has what kind of animals?
lampreys
Subphylum Craniata Class Chondrichthyes has what kind of animals?
cartilaginous fish
Subphylum Craniata Class Actinopterygii has what kind of animals?
ray-finned fish
Subphylum Urochordata has what kind of animals? (2)
tunicates and sea squirts
the larvae of Subphylum Urochordata are…(2)
- free swimming
- exhibit all four chordate characteristics
adults of Subphylum Urochordata are sessile/free-living?
sessile
what have adults of subphylum Urochordata resorbed as adults? (3)
- nerve cord
- notochord
- post-anal tail
what is the only Chordate to have an open circulatory system?
Subphylum Urochordata
Subphylum Cephalocordata has what kinds of animals?
lancelets
do members of Subphylum Cephaocordata display all four characteristics of Chordates?
yes, their whole lives!
T/F members of Cephalocordata are small partially burrowing filter feeders
true
what is the first group to have dorsal/ventral aorta and segmented musculature?
Subphylum Cephalocordata
Subphylum Craniata consists of what types of animals? (2)
- hagfish
- all other derived organisms
defining characteristics of Craniata (5)
- BRAINCASE
- complex sensory organs
- heart
- hemoglobin
- muscular gut
Subphylum Craniata contains what Classes that belongs to none of the clades discussed?
Myxini
defining characteristics of Clade Vertebrata
- vertebrae
- two or more semicircular ear canals
Clade Vertebrata contains what Class (this is the only Clade it belongs to)?
Petromyzontida - lamprey
Class Petromyzontida has what kind of animals?
lampreys
Class Petromyzontida is the most basal group of Vertebrates, meaning…(2)
(1) they have no true bony vertebra, instead (2) they have a series of cartilage structures called arcualia
do members of Class Petromyzontida have jaws?
no
how many gill slits do members of Class Petromyzontida have?
seven
Class Petromyzontida contains ecto/endoparasites?
ectoparasites
defining characteristic of Gnathstomata
JAWS
Gnathostomata’s only Class is….
Chondrichthyes
Class Chondrichthyes has what kinds of animals? (4)
- sharks
- skates
- rays
- chimaeras
what Class contains cartilaginous fishes?
Class Chondrichthyes
how many gill slits do members of Chondrichthyes have?
five
what kind of fertilization does Class Chondrichthyes have?
internal
Many members of Class Chondrichthyes have what behind each eye?
a spiracle
what do spiracles do?
draw in water for respiration
the bodies of Class Chondrichthyes are covered in _____ scales made of _____
placoid, dentin
Ampullae of Lorenzini
electroreceptors located on the under side of the “nose” of class Chondrichthyes
lateral line detects…(3)
movement, vibration, and pressure in water
reproduction in Chondrichthyes: oviparous
egg-laying
reproduction in Chondrichthyes: ovoviviparous
live bearing but young are fed via a yolk sac
reproduction in Chondrichthyes: viviparous
live bearing with young fed via placentral nourishment
Clade Osteichthyes defining characteristics (4)
- HEAVILY OSSIFIED SKELETON
- lepidotrichia (bony fish element)
- lungs
- in fish: swim bladder and gills
in Clade Osteichthyes, what has happened to the notochord?
it has been greatly reduced into intervertebral disks
Class Actinopterygii contains what kind of animals?
ray-finned fishes
what is the dominant class of vertebrates with over 29,000 species?
Class Actinopterygii
the gills of members of Class Actinopterygii are covered by…
a bony operculum
scales of members of Class Actinopterygii are made of…
dermal bone
Like Chondrichthyes, Actinopterygii has a….
lateral line
heterocercal fin
vertebra extend into the upper lobe making it longer
homocercal fin
vertebra terminate just after the caudal peduncle
Name this specimen.
Phylum Chordata
Subphylum Urochordata
Name this specimen.
Phylum Chordata
Subphylum Urochordata
name these specimen
Phylum Chordata
Subphylum Urochordata
name these specimen
Phylum Chordata
Subphylum Urochordata
name this specimen
Phylum Chordata
Subphylum Cephalochordata
name this specimen
Phylum Chordata
Subphylum Craniata
Class Myxini
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Vertebrata
Class Petromyzontida
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Vertebrata
Class Petromyzontida
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Vertebrata
Class Petromyzontida
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Vertebrata
Class Petromyzontida
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Vertebrata
Class Petromyzontida
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Gnathostomata
Class Chondrichthyes
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Gnathostomata
Class Chondrichthyes
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Gnathostomata
Class Chondrichthyes
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Gnathostomata
Class Chondrichthyes
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Gnathostomata
Class Chondrichthyes
name what animal this specimen comes from
Phylum Chordata
Subphylum Craniata
Clade Gnathostomata
Class Chondrichthyes
name what animal this specimen comes from, and what kind of birth it is
Phylum Chordata
Subphylum Craniata
Clade Gnathostomata
Class Chondrichthyes
- ovoviviparous
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Gnathostomata
Class Chondrichthyes
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Gnathostomata
Class Chondrichthyes
name these specimen
Phylum Chordata
Subphylum Craniata
Clade Osteichthyes
Class Actinopterygii
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Osteichthyes
Class Actinopterygii
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Osteichthyes
Class Actinopterygii
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Osteichthyes
Class Actinopterygii
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Osteichthyes
Class Actinopterygii
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Osteichthyes
Class Actinopterygii
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Osteichthyes
Class Actinopterygii
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Osteichthyes
Class Actinopterygii
name this specimen
Phylum Chordata
Subphylum Craniata
Clade Osteichthyes
Class Actinopterygii
name this specimen
Phylum Chordata
Subphylum Urochordata
larvae
name this specimen
Phylum Chordata
Subphylum Urochordata
name this specimen
Phylum Chordata
Subphylum Cephalochordata
name this specimen
Phylum Chordata
Subphylum Cephalochordata