WebJun 8, 2024 · The vast majority of present-day fish belong to this group, which consists of approximately 30,000 species, making it the largest class of vertebrates in existence today. ... Water is drawn over gills that are located in chambers covered and ventilated by a protective, muscular flap called the operculum. Many bony fish also have a swim … Sharks and rays typically have five pairs of gill slits that open directly to the outside of the body, though some more primitive sharks have six or seven pairs. Adjacent slits are separated by a cartilaginous gill arch from which projects a long sheet-like septum, partly supported by a further piece of cartilage called the gill ray. The individual lamellae of the gills lie on either side of the septum. The base of the arch may also support gill rakers, small projecting elements that help t…

Operculum (fish) - Wikipedia

WebFish obtain oxygen through their gills, which extract dissolved oxygen from water. This process is essential for their survival and allows them to live in aquatic environments. More WebGoldfish gills work much like a pair of lungs but instead use the dissolved oxygen in their water. Since a goldfish lives its entire life in water, it uses osmosis These gills are located right behind the head and eyes on both sides of the goldfish’s body and covered by the operculum, commonly called gill covers. scorpion helmet r710 breath guard

Solved 5.+Which of the following are found in the Class - Chegg

WebIt includes both marine and freshwater fishes with bony endoskeleton and spindle shaped body. Skin is covered by ganoid, cycloid or ctenoid scales. Respiration is by four pairs of filamentous gills and is covered by an operculum on either side. Air bladder is present with or without a connection to the gut. The opercular series contains four bone segments known as the preoperculum, suboperculum, interoperculum and operculum. The preoperculum is a crescent-shaped structure that has a series of ridges directed posterodorsally to the organisms canal pores. The preoperculum can be located through an … See more The operculum is a series of bones found in bony fish and chimaeras that serves as a facial support structure and a protective covering for the gills; it is also used for respiration and feeding. See more • Hyomandibula See more During development the opercular series is known to be one of the first bone structures to form. In the three-spined stickleback the opercular series is seen forming at around seven days after fertilization. Within hours the formation of the shape is visible … See more WebIn Osteichthyes four pairs of gills are present on each side and they are covered with operculum. Myxine is a cyclostome. Pristis and Trygon are the members of … prefab cabins asheville nc