Question

Medal For Best Answer ! :D


A flexible, supporting structure found only in chordates is the (1 point)
nerve net.
notochord.
pharyngeal slits.
dorsal fin.

Answer 1

NOTOCHORD

Answer 2

What About These && Thanks Alot (:

Ancient chordates are thought to be most closely related to which of the following species? (1 point)
spiders
earthworms
octopi
sea stars
3. Fossil evidence indicates that Myllokunmingia, the earliest known vertebrate, had feathery gills, skeletal structures thought to be made of cartilage, and traces of fins. Based on this description, Myllokunmingia was most likely an early species of (1 point)
reptile.
fish.
bird.
mammal.

Answer 3

#2) The answer is either OCTOPI or SEA STAR. You need to check.
#3) FISH

Answer 4

Thanks

Answer 5

Hmm....

Answer 6

Number 1:
The typical chordate characteristics are the notochord, the dorsal hollow nerve ... chordates. Pharyngeal slits ... [ supporting bones, used for crawling. The only ...
NUMBER 2:
Ancient chordates are thought to be most closely related to which of the following species d. sea anemones

NUMBER 3:
Fossil evidence indicates that Myllokunmingia, the earliest known vertebrate, had feathery gills, skeletal structures thought to be made of cartilage, and traces of fins. [ Based on this description, Myllokunmingia was most likely an early species of FISH. ]