5 member examples
What is the phylum and who are members of the chordates?
phylum chordata, include humans, sharks, goldfish, lancelets and tunicates
What type of symmetry, segmentation, and excretory system do mollusks have?
bilateral symmetry, body segmentation, complex excretory system, + deutorostomes
deutorostomes means anus forms first from blastopore
n d p p e
Name the 5 characteristics all chordates have.
- notochord
- dorsal tubular nerve chord
- pharyngeal pouches
- post-anal tail
- endostyle
dorsal…providing…
Notochord
dorsal supporting rod providing support & protection
filled with…that nourishes…
Dorsal tubular nerve chord
filled with fluid that nourishes nerve cells
develop into…
Pharyngeal pouches
develop into a variety of organs
e.g. gills or gill slits
extension of…
Post-anal tail
extension of nerve chord & body behind anus
precursor to…
Endostyle
precursor to thyroid gland
invertebrate…, notochord not…
What is the subcategory Protochordates?
- invertebrate chordates
- notochord not replaced by vertebral column
Which protochordate has a notochord, dorsal tubular nerve chord, gills slits, tail and endostyle in adult fish?
lancelets
Which protochordate is sessile, filter feeding and show all chordate characteristics in larval stage?
tunicates
aka tunics
