Chondrichthyes body plan
WebStudy with Quizlet and memorize flashcards containing terms like Protostome Animals Lophotrochozoans, Protostome- 2 clades, Lophotrochozoa and more. WebThe dorsal fin and spine are erectile. Like male sharks and rays, male chimaeras have claspers that serve to transfer sperm to the female, but in addition they have an erectile …
Chondrichthyes body plan
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WebApr 1, 2012 · A depressed, rounded pectoral disk supported to the snout tip by fin radials, common to skates and stingrays, is indicated to have been derived independently by … WebMar 16, 2024 · chondrichthyan, (class Chondrichthyes), also called chondrichthian, any member of the diverse group of cartilaginous fishes that includes the sharks, skates, rays, and chimaeras. The class is one …
WebJun 8, 2024 · chordate: a member of the phylum Chordata; numerous animals having a notochord at some stage of their development; in vertebrates this develops into the … WebMost unusually for a chondrichthyan, the cranial scales are asymmetric, with irregularandinconsistentshapes.Finspines,andspinesassoci- ated with girdles and …
Chondrichthyes are jawed vertebrates with paired fins, paired nares, scales, and a heart with its chambers in series. Extant chondrichthyes range in size from the 10 cm (3.9 in) finless sleeper ray to the 10 m (32 ft) whale shark. See more Chondrichthyes is a class that contains the cartilaginous fishes that have skeletons primarily composed of cartilage. They can be contrasted with the Osteichthyes or bony fishes, which have skeletons primarily composed of See more Fertilization is internal. Development is usually live birth (ovoviviparous species) but can be through eggs (oviparous). Some rare species are viviparous. There is no parental care after birth; however, some chondrichthyans do guard their eggs. See more • Note: Lines show evolutionary relationships. See more • Taxonomy of Chondrichthyes • Images of many sharks, skates and rays on Morphbank See more Skeleton The skeleton is cartilaginous. The notochord is gradually replaced by a vertebral column … See more Cartilaginous fish are considered to have evolved from acanthodians.The discovery of Entelognathus and several examinations of acanthodian characteristics indicate that bony fish evolved directly from placoderm like ancestors, while acanthodians represent a … See more • List of cartilaginous fish • Cartilaginous versus bony fishes • Largest cartilaginous fishes See more WebIt is located between the digestive tube and the nerve cord, providing skeletal support through the length of the body. In some chordates, the notochord acts as the primary …
WebThe body plan of cnidarians is composed of two cell layers, the epidermis (from ectoderm) and the gastrodermis (from endoderm). Therefore, these simple animals are triploblastic and have well developed organ systems. A false 17 Q Species richness A the count of the number of differnt species in an area 18 Q
Web38 minutes ago · The country's top constitutional body is expected to rule Friday on if the plan passes muster. President Emmanuel Macron proposed raising the retirement age in … exercise physiologist greensboroughWebAug 8, 2024 · Class: Chondrichthyes. Huxley, 1880. Chondrichthyes or cartilaginous fishes are jawed fish with paired fins, paired nostrils, scales, two-chambered hearts, and … btc price tomorrowWebnoun plural. Chon· drich· thy· es kän-ˈdrik-thē-ˌēz. : a class comprising cartilaginous fishes with well-developed jaws and including the sharks, skates, rays, chimeras, and extinct … exercise physiologist redcliffeWebThe digestive system comprises a mouth, pharynx, stomach, intestine (straight) and cloaca present on the ventral side. Cloaca has a dual function in females and also acts … exercise physiologist mosman parkWebThe Chondrichthyes or cartilaginous fishes are a major class of jawed fish that includes the sharks, rays, and skates, and whose skeleton is characterized by rubbery cartilage, … exercise physiologist nowraWebAgnatha; Chondrichtyes; osteichtyes; amphibia: Learn with flashcards, games, and more — for free. btc private key generator softwareWebDec 20, 2024 · The Chondrichthyes (sharks, rays, and chimeras) are a diverse group of animals that occupy a key position in the phylogeny of the vertebrates, as one of their … exercise physiologist perth ndis