Question

identification of chordates by morphology ​

Answer 1

Answer:

Hello mate

Explanation:

Vertebrates are differentiated by having a vertebral column. As chordates, all vertebrates have a similar anatomy and morphology with the same qualifying characteristics: a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail.

Answer 2

ANSWER:)

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

LEARNING OBJECTIVES

Identify the key features of the chordates

KEY TAKEAWAYS

Key Points

These characteristics are only present during embryonic development in some chordates.

The notochord provides skeletal support, gives the phylum its name, and develops into the vertebral column in vertebrates.

The dorsal hollow nerve cord develops into the central nervous system: the brain and spine.

Pharyngeal slits are openings in the pharynx that develop into gill arches in bony fish and into the jaw and inner ear in terrestrial animals.

The post-anal tail is a skeletal extension of the posterior end of the body, being absent in humans and apes, although present during embryonic development.

Key Terms

notochord: a flexible rodlike structure that forms the main support of the body in the lowest chordates; a primitive spine

nerve cord: a dorsal tubular cord of nervous tissue above the notochord of a chordate

pharyngeal slit: filter-feeding organs found in non-vertebrate chordates (lancelets and tunicates) and hemichordates living in aquatic environments

Characteristics of Chordata

Animals in the phylum Chordata share four key features that appear at some stage during their development (often, only during embryogenesis) ki of a series of bony vertebrae joined together as a backbone. In adult vertebrates, the vertebral column replaces the embryonic notochord.

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Vertebrates: Vertebrata are characterized by the presence of a backbone, such as the one that runs through the middle of this fish. All vertebrates are in the Craniata clade and have a cranium.

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