Ch6.3 Chordata

Chordates are ...

• Protostomes

• Deuterostomes

• Anything they want to be. They have the freedom to choose

Chordates have ...

• Endoskeletons

• Exoskeletons

Label the four traits of chordates

a

b

c

d

Notochord

Dorsal Hollow Nerve Cord

Pharyngeal Pouches/Slits

Postanal Tail

The gills are derived from the...

• Postanal tail

• Pharyngeal pouches

• Dorsal hollow nerve cord

• Notochord

Tags

NGSS.MS-LS4-2

The dorsal, flexible rod that is used to anchor muscles for locomotion

• Pharyngeal Pouches

• Postanal Tail

• Dorsal hollow nerve cord

• Notochord

The dorsal, flexible rod that becomes the segmented backbone in vertebrates

• Pharyngeal Pouches

• Postanal Tail

• Dorsal hollow nerve cord

• Notochord

Tags

NGSS.MS-LS4-2

The structure that becomes the spinal cord in vertebrates

• Pharyngeal Pouches

• Postanal Tail

• Dorsal hollow nerve cord

• Notochord

Tags

NGSS.MS-LS4-2

Which Subphylum would this organism belong to?

• Vertebrata

• Cephalochordata

• Urochordata

Tags

NGSS.MS-LS4-2

T/F: Tunicates & Sea Squirts lose the notochord, tail, and nerve cord when developing into the adult stage

• True

• False

ID this animal

• Lancelet

• Sea Squirt

• Jawless fish

• Cartilaginous fish

Tags

NGSS.MS-LS4-2