Question

evolution of protochordata​

Answer 1

Answer:

Recent protochordates are thought to have evolved from the same ancestral stock as that which gave rise to the vertebrates. Two main theories have gained general acceptance as to how the vertebrates may have evolved. ... Subsequently, the sessile stage was lost, and the vertebrates evolved from this free-swimming animal

Mark Branilist

Answer 2

Explanation:

• Recent protochordates are thought to have evolved from the same ancestral stock as that which gave rise to the vertebrates. Two main theories have gained general acceptance as to how the vertebrates may have evolved. ... Subsequently, the sessile stage was lost, and the vertebrates evolved from this free-swimming animal.