Question

amphioxus 10chracter
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Answer 1

Answer:

Amphioxi are seldom more than 8 cm (3 inches) long and resemble small, slender fishes without eyes or definite heads. They are grouped in two genera—Branchiostoma (also called Amphioxus) and Epigonichthyes (also called Asymmetron)—with about two dozen species. The chordate features—the notochord (or stiffening rod), gill slits, and dorsal nerve cord—appear in the larvae and persist into adulthood.

Amphioxi spend much of their time buried in gravel or mud on the ocean bottom, although they are able to swim. When feeding, they let the anterior part of the body project from the surface of the gravel so that they can filter food particles from water passing through their gill slits. At night they often swim near the bottom. They burrow into sand using rapid movements of the body, which is tapered at both ends and is covered by a sheath (the cuticle).

Explanation:

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