Non-vertebrate chordates Urochordats Fishes (vertebrates) Actinistia Vertebrate

Question

Non-vertebrate chordates Urochordats Fishes (vertebrates) Actinistia Vertebrate column tetrapods Pisces digits endothermia The diagram above shows the phylogenetic tree for all chordates. The term fish is used to group lampreys (Myxinoidea, Petromyzondontia), sharks, rays (chondrichthyes), and bony fishes (actinopterygii, Actinistia, Dipnoil). All ishes form a group O Polyphyletic, because fishes do not share the most recent common ancestor Paraphyletic, because fishes share a recent common ancestor but tetrapods also descend from that ancestor although tetrapods are not considered fish O Monophyletic, because fishes share a recent common ancestor and all the descendants from that ancestor are considered fish

Explanation / Answer

1. They are paraphyletic as tetrapods are also known to have evolved from bony fishes (option 2)

They were primarily aquatic but obtained 4 legs that made them to move even to land

Related Questions

Navigate

• Browse (All)
• Browse N
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.