10 Questions
Which of the following is a characteristic of vertebrates?
Post-anal tail during development
What is the defining feature of invertebrate chordates?
Notochord
Which class of chordates includes organisms with the characteristic of housing and protecting the spinal cord?
Fish (Fish)
During which period did the phylum Chordata originate?
Cambrian period
What is the function of the notochord in chordates?
To provide initial skeletal support and maintain body shape
What is the composition of the dorsal hollow nerve cord in chordates?
Outer covering called ectoderm and inner covering called endoderm
What do the pharyngeal slits in chordates eventually give rise to?
Gill slits in vertebrates and other derivatives in invertebrate chordates
What is a common feature of respiratory systems in chordates?
Adaptation to specific environments
What is a key component of the nervous system in chordates?
A brain, spinal cord, and peripheral nerves
What determines whether chordates have an endoskeleton or exoskeleton?
Their class
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