Question

К хордовым относят многоклеточных двусторонне симметричных

Answer 1

Ответ:

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Объяснение:

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Answer 2

Chordates: Characteristics and Classification

Chordates are a group of animals that belong to the phylum Chordata. They are characterized by several key features, including a notochord, a dorsal hollow nerve cord, pharyngeal slits, and a post-anal tail. These features are present at some stage in the animal's life cycle, although they may not always be visible in the adult form.

The notochord is a flexible rod that provides support to the body, and the dorsal hollow nerve cord is a tubular structure that develops into the spinal cord in vertebrates. Pharyngeal slits are openings in the pharynx, which may be used for filter-feeding, gas exchange, or communication. The post-anal tail is an extension beyond the anus, which is present in the embryonic stage of development.

Chordates are further classified into three subphyla: Urochordata (tunicates), Cephalochordata (lancelets), and Vertebrata (vertebrates). Vertebrates are the most familiar group and include animals with a backbone, such as fish, amphibians, reptiles, birds, and mammals.

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