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. Capture-induced premature birth and abortion (collectively called … 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 Cartilaginous fish are considered to have evolved from acanthodians.The discovery of Entelognathus and several examinations of acanthodian … See more • List of cartilaginous fish • Cartilaginous versus bony fishes • Largest cartilaginous fishes See more Skeleton The skeleton is cartilaginous. The notochord is gradually replaced by a vertebral column … See more • Note: Lines show evolutionary relationships. See more • Taxonomy of Chondrichthyes • Images of many sharks, skates and rays on Morphbank See more WebMar 30, 2024 · Chondrichthyes- development is indirect Cnidaria- external fertilisation Annelida- internal fertilisation Cyclostomata- external fertilisation Answered by Sivanand …
Reproductive Biology and Phylogeny of Chondrichthyes
WebMar 29, 2024 · The subphylum is one of the best known of all groups of animals. Its members include the classes Agnatha, Chondrichthyes, and Osteichthyes (all fishes); Amphibia (amphibians); Reptilia (reptiles); Aves (birds); and Mammalia (mammals). ... (viviparous) after internal fertilization. The posterior angle of the male’s pelvic fins are … WebFeb 13, 2024 · Chondrichthyes (cartilaginous fish) Class Mammalia. All mammals have hair, three ear bones, ... warm blood (endothermic), a heart comprised of four chambers, internal fertilization, and a high level of … chesapeake laser hair removal
Egg case (Chondrichthyes) - Wikipedia
WebJan 1, 2010 · A range of reproductive strategies have been documented among extant gnathostome fishes (Osteichthyes and Chondrichthyes). Internal fertilization is … WebOct 14, 2011 · Internal fertilization is universal in chondrichthyan fishes and, as such, requires a suite of biological activities, including behavioral, morphological and … Web3. is a stingray internal Answer: Although Chondrichthyes are fishes, they exhibit internal fertilization and possess specific male genital anatomy that resembles mammals. 4. what kind of animals is stingray Answer: Stingrays are a group of sea rays, which are cartilaginous fish related to sharks. [tex]Study Well![/tex]⊕∪⊕. Answer: chesapeake lawn and yard