Echinoderm And chordates Flashcards
What subphyla does sea urchins belong to?
Echinoidea
Echin - oi - dea
What class is brittle stars in?
Ophiuroidea
Ophi - uroi - dea
In the class Urochordata, what is their tunic made of?
Cellulose
Two features shared by all vertebrates:
Vertebral column and district head
What key features separate Chondrichthyes and Agnatha?
Hinged jaw
What key feature separates Osteichthyes and Chondrichthyes?
Bony skeleton
What helps Osteichthyes sense movement in water?
The lateral line ( along their body)
What kind of symmetry do sea stars have as adults?
Asteroidea have pentaradial symmetry
Flexible rod that forms along the dorsal side of the primitive gut
The notochord
What did tetrapods that colonized land evolve from?
Osteichthyes
What class do Lampreys belong to?
Agnatha
Bony fishes with a mineralized bone tissue are in what call?
Osteichthyes
Echinoderms and chordates belong are both protostomes or Deuterostomes?
Deuterostomes
How does water get to the tube feet in an Asteroidea?
From the Madreporite, stone canal, radial canal
The underside of the sea star ray has a type of groove
Ambulacral Groove
Name all parts
Oral:
1. Ambulacral groove 2. Mouth 3.spines 4. Arms
Name parts
Aboral
1.spines 2. Arms 3. Madreporite 4. Anus
Asteroidea
- Ambulacral groove 2. Mouth
Name all parts
Radial canal
Madreporite
Water
Ampulla[e]
Tube foot
Stone Canal
Ring canal
Name
Arms, eyespots, Madreporite
Name all parts
Mouth, Ambulacral ossicles, tube feet, Ambulacral groove
Name structures …starts with P
Pyloric duct, pyloric cecum
What is the pyloric cecum?
Digestive gland
Name all
Operculum
Dorsal fin
Caudal fin
Anal fin
Pelvic fin
Pectoral fin
Lateral line
Name all
Gill
Liver
Gonad
Heart
Name all
Gill
Pyloric cecum
Gonad
Spleen
Intestine
Ventricle
Atrium
Refresh
Look and try to remember LOL
The internal [endo] skeleton is made of what type of plates?
Ossicles
Type of symmetry Echinoderms have as larvae. And as adults?
Bilateral
Pentaradial
For locomotion and feeding
Water-vascular system
Flexible rod that extends down the length of the body of a Chordate
Notochord
Notochord becomes skeleton
Invertebrate chordates
Notochord disintegrates
Vertebrate chordates
Four characteristics shared by ALL chordata
Dorsal hollow nerve cord
Notochord
Pharyngeal slits or pouches
Postanal tail
Describe Deuterostome Embryonic development
Blastopore becomes the anus
Mesoderm derived from folds of the endoderm
Name the structures
Madreporite
Radial canal
Gonads
Ampulla
Podium
Digestive gland
Ring canal
Stomach
Starfish development
Zygote
Single celled diploid
Starfish development
Early cleavage
Divisions to produce multicelular ball of cells
Starfish development
Blastula
Ball of cells
Starfish development
Gastrula
Blastopore and archenteron form
Star fish development
Bipinnaria
Larva stage
What stage is the Bipinnaria stage?
Larval stage
What stage is this sea star at?
Young starfish
What class does this belong to?
Ophiuroidea
Oph iu roidea
What class and what animal is this?
Sea cucumber
Holothuroidea
Holo thu roidea
Name these structures L to R and under
Notochord
Dorsal hollow nerve cord
Post anal tail
Pharyngeal slits
What class is this animal and what is it’s tunic made out of?
Urochordata
Uro chordata
Cellulose
What class and name of animal
Cephalochordata
Lancelets
What class do they belong to?
Agnatha
