The earliest vertebrates lacked:
A) a notochord.
B) gills.
C) jaws.
D) brains.
E) skeletons.
Correct Answer:
Verified
Q15: At some stage of the life cycle,
Q16: The great size and mobility of the
Q17: Which of the following features is absent
Q18: _ have a dorsal nerve cord.
A)Sharks
B)Bugs
C)Starfishes
D)Leeches
E)Earthworms
Q19: A tunicate is a(n):
A)bony fish.
B)cartilaginous fish.
C)jawless fish.
D)amphibian.
E)invertebrate
Q21: Fins composed of rod-shaped bones surrounded by
Q22: Lungfishes are classified as:
A)amphibians.
B)lobe-finned fishes.
C)jawless fishes.
D)ray-finned fishes.
E)cartilaginous
Q23: Lamprey populations introduced into the Great Lakes
Q24: Which were the first tetrapods to move
Q25: Lampreys differ from other vertebrates because they
Unlock this Answer For Free Now!
View this answer and more for free by performing one of the following actions
Scan the QR code to install the App and get 2 free unlocks
Unlock quizzes for free by uploading documents