Question

enumerate characteristics of cephalochordata​

Answer 1

Answer:

The lancelets are also called cephalochordates (Greek: kephale, “head”) because the notochord extends from near the tip of the tail to well into the anterior of the body. ... The segments of vertebrates and cephalochordates are so similar that they were almost certainly present in the common ancestor of the two groups.Cephalochordata. Members of Cephalochordata possess a notochord, dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail in the adult stage. They do not have a true brain, but the notochord extends into the head, which gives the subphylum its name ( “cephalo” is Greek for head).

Answer 2

Answer:

cephalochordate (from Greek: κεφαλή kephalé, "head" and χορδή khordé, "chord") is an animal in the chordate subphylum, Cephalochordata. They are commonly called amphioxus or lancelets. They are chordates with all 5 synapomorphies, the characteristics all chordates have during the larval or adulthood stages. These synapomorphies include: notochord, dorsal hollow nerve cord, endostyle, pharynx and post-anal tail. The fine structure of the cephalochordate notochord is best known for the Bahamas lancelet, Asymmetron lucayanum [2] Cephalochordates are represented in modern oceans by the Amphioxiformes.

Cephalochordates

Explanation:

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