Part of the gill structure in jawless fish evolved into jaws.
Correct Answer:
Verified
Q2: All chordates are vertebrates.
Q9: Terrestrial vascular plants probably evolved from green
Q10: All crossopterygians went extinct at the end
Q11: The Devonian period is also known as
Q12: Lobe-finned fish are important in the fossil
Q13: Plants became extinct at twice the rate
Q15: The early fish were jawless and armored,
Q16: Amphibians were the first organisms to live
Q17: The first vertebrates evolved on the land.
Q19: The pelycosaurs are the ancestral base for
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