Question

What are the 3 chordate clades?

Answer 1

Chordate:

1. Animals having a flexible rod supporting their dorsal or rear sides belong to the Chordata phylum.
2. The vertebrates, lancelets, and tunicates are members of the Chordata phylum, which includes creatures with a notochord, dorsally located central nervous system, and gill slits at some stage of development.
3. Urochordata, Cephalochordata, and Vertebrata are the three chordate clades.

Urochordata:

1. A Notochord, a hollow nerve cord, and a post-anal tail are all present.
2. There are more than two cell layers in the human body, which include tissues and organs.
3. Its gut is in the shape of a U.
4. There is no coelomic body cavity in the body.
5. During the larval stage, their chordate characteristics are more prominent.
6. In adulthood, they resemble invertebrates rather than chordates.
7. Eg. Ascidia

Cephalochordata:

1. Both sides of the body are symmetrical.
2. The structure of the body is comparable to that of a fish.
3. There is no head on the body, and it is separated into two sections: the trunk and the tail.
4. The epidermis is only one layer thick, and the exoskeleton is gone.
5. As the name says, the body is elongated, flattened, non-pigmented, and pointed at both ends.
6. Fins on the dorsal, ventral, and caudal sides that are low and continuous.
7. Lancelet is an example.

Vertebrata:

1. All vertebrates have a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail.
2. The transformation of the notochord into a bony backbone distinguishes the subphylum Vertebrata from the phylum Chordata.
3. Amphibians, reptiles, mammals, and birds are all vertebrates, as are jawless fishes, bony fishes, sharks, and rays.
4. Two examples are animals and birds.