yes, all vertebrates have gill slits in the womb but as they develop most species lose the gills. this is an example of comparative embriology which helps scientist discover a common ancestor
Pharyngeal slits are not gill slits. They are filter-feeding organs in non-vertebrates, and are used to strain matter and food from water.
No, not all vertebrates have tubular nerve cord.
Chordata is the phylum that contains animals with backbones and gill slits. Members of this phylum include vertebrates like fish, amphibians, reptiles, birds, and mammals.
by the gill slits
A leopard shark has five gill slits on either side of its body. The gill slits are on the sides of the shark's head.
Regardless of the presumed relationship to tiktaalik, you will find gill slits to be present in all vertebrates. In reptiles, the slits would not persist past the embryonic stage but, the crocodiles' jaws were derived from the gill arches. Look up "Ontogeny recapitulates phylogeny."
no.
Pharyngeal gill slits are not readily apparent in adult humans but are present during early embryonic development as part of the pharyngeal arches. In vertebrates, these structures typically develop into various anatomical features, such as parts of the ear and throat. In some aquatic animals, like fish, the gill slits are prominent and functional throughout life. Overall, while they are crucial in early development, they become less visible or non-functional in many terrestrial vertebrates.
A distinct brain and gill slits used for respiration as opposed to filterfeeding. Granted, those last ones aren´t found outside the fish class, but other vertebrates still develop them in their embryology.
The pharyngeal gill slits in chordates are typically paired structures, found on either side of the pharynx. These slits are important for respiration, filter feeding, and in some cases, evolved into other structures such as jaws in vertebrates.
Gill slits in sharks and rays help to funnel water into the gills, which empty into the pharynx and eventually the lungs.
all chordates have notochord, gill slits, postanal tail, and nerve chord.