Quick Answer: What Does Chordata Mean In Science?

What is the scientific meaning of Chordata?

Chordata (biology definition): a phylum of the animal kingdom comprising all the animals that have, at some stage in their life, a notochord (a hollow dorsal nerve cord), pharyngeal slits, and a muscular tail extending past the anus. Includes the subphyla Cephalochordata, Urochordata, and Vertebrata (vertebrates).

What makes a Chordata a Chordata?

Characteristics of Chordata. Animals in the phylum Chordata share four key features: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail.

Is Chordata a scientific name?

The Phylum Chordata includes the well-known vertebrates (fishes, amphibians, reptiles, birds, mammals). The vertebrates and hagfishes together comprise the taxon Craniata. The remaining chordates are the tunicates (Urochordata), lancelets (Cephalochordata), and, possibly, some odd extinct groups.

What are the 7 characteristics of a chordate?

Terms in this set (7)

  • Notochord.
  • Dorsal hollow nerve cord.
  • Postanal tail.
  • Segmented muscle bands.
  • Endostyle.
  • Brain.
  • Pharyngeal gill slits.

What is a notochord simple definition?

: a longitudinal flexible rod of cells that in the lowest chordates (such as a lancelet or a lamprey) and in the embryos of the higher vertebrates forms the supporting axis of the body. Other Words from notochord Example Sentences Learn More About notochord.

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What are the 5 characteristics of chordates?

Animals in the phylum Chordata share five key chacteristics that appear at some stage during their development: a notochord, a dorsal hollow (tubular) nerve cord, pharyngeal gill arches or slits, a post-anal tail, and an endostyle/thyroid gland (Figure 2).

What are the 3 Subphyla of Chordata?

The prevailing view holds that the phylum Chordata consists of three subphyla: Urochordata (Tunicata), Cephalochordata and Vertebrata (figure 1a). All three groups are characterized by possession of a notochord, a dorsal, hollow neural tube (nerve cord), branchial slits, an endostyle, myotomes and a postanal tail.

What is the meaning of endostyle?

The endostyle is a longitudinal, ciliated, grooved organ on the ventral wall of the pharynx that secretes mucoproteins into the alimentary canal for filter feeding (Fig. In lampreys, the endostyle is developed near the pharynx, and some component cells change into follicular epithelial cells of the thyroid gland.

What is the scientific name of mammal?

The Chordata is the animal phylum with which everyone is most intimately familiar, since it includes humans and other vertebrates.

Is a fly a Chordata?

Together with chordates (vertebrates, sea squirts and lancelets), they make up the deuterostomes. Fruit flies and most worms that aren’t “acorn”, on the other hand, are protostomes. In chordates, the notochord (precursor of our spine) sends out chemical signals to direct nerve cord formation.

Where are Chordata found?

Chordates range in length from about a centimeter to over 30 meters (100 feet). They live in marine, freshwater, terrestrial, and aerial habitats. They can be found from the equator to the poles.

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What are some animals in Chordata?

Most species within the phylum Chordata are vertebrates, or animals with backbones (subphylum Vertebrata). Examples of vertebrate chordates include fishes, amphibians, reptiles, birds, and mammals. A modern human—one species of mammal—is a familiar example of a chordate.

Are dogs Chordata?

The phylum Chordata, which includes those animals that are chordates or vertebrates, meaning they have a backbone. Dogs are classified in the class Mammalia, so they are mammals. Besides mammals, remember that other classes of chordates include fish, birds, reptiles, and amphibians.

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