WebA defining feature is the lack of paired lateral appendages (fins). Some of the earliest jawless fishes were the ostracoderms (which translates to “shell-skin”). Ostracoderms were vertebrate fishes encased in bony ... Hagfishes do not replace the notochord with a vertebral column during development, as do true vertebrates. Petromyzontidae: ... WebCorrect option is D) The fundamental character of phylum Chordata are:-. (1) Presence of Notochord–. It is a long rod that is made of cartilage which runs between the nerve cord …
Pectoral and Pelvic Girdles – Morphology of the Vertebrate Skeleton
WebApr 12, 2024 · An animal lacking a vertebral column, or backbone, ... It differs from octopi and squid by having two long retractile filaments that are situated between the first two pairs of arms on its dorsal side. As a result, ... Elbows are formed when these appendages are held parallel to the body. WebFigure 11.3.2 The axial skeleton. The axial skeleton, shown in blue in Figure 11.3.2, consists of a total of 80 bones. Besides the skull, it includes the rib cage and vertebral column. It also includes the three tiny ossicles (hammer, anvil, and stirrup) in the middle ear and the hyoid bone in the throat, to which the tongue and some other soft tissues are attached. buddha airlines cargo
Biology, Biological Diversity, Vertebrates, Fishes OERTX
Webcharacter/animal pharyngeal vertebrae paired appendages muscular fins with muscular limbs swim sucker- appendages bladder with or lung muscular slits and limbs like dermal used in adapted for mouth rays ... + indicates that a vertebrate group possesses the character listed at the top of the column - the character is absent and represents ... WebJun 24, 2024 · The axial skeleton of all vertebrates is composed of individual units known as vertebrae. Each vertebra has individual anatomical attributes, yet they can be classified in five different groups, namely cervical, thoracic, lumbar, sacral and caudal, according to shared characteristics and their association with specific body areas. Variations in … WebIn hagfishes, the notochord is not replaced by the vertebral column, as it is in true vertebrates, and thus they may (morphologically) represent a sister group to the true vertebrates, ... Lampreys lack paired appendages, as do the hagfishes, although they have one or two fleshy dorsal fins. As adults, ... buddha airlines flight status