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What is a pharyngeal gill?
Pharyngeal slits are not gill slits. They are filter-feeding organs in non-vertebrates, and are used to strain matter and food from water.
What animals have a tubular nerve cord and gill slits at some point in their lives?
No, not all vertebrates have tubular nerve cord.
Which phylum contains animals that have backbones and gill slits?
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.
How do agnatha breath?
by the gill slits
How many gill slits does a leopard shark have?
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.
Do gill slits disappear before birth in all chordates?
no.
Do crocodile have any rudimentary gills because they were evolved by a fish named tiktaalik?
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."
What two things are present in all vertebrates but not some chordates?
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.
What chordate structure is paired?
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.
What is the function of the gill slits?
Gill slits in sharks and rays help to funnel water into the gills, which empty into the pharynx and eventually the lungs.
What do all choradates have?
all chordates have notochord, gill slits, postanal tail, and nerve chord.
The openings in the throat region of a fish that lead to the gill chamber are called?
The openings in the throat region of a fish that lead to the gill chamber are called gill slits. These slits allow water to flow over the gills so that oxygen can be absorbed and carbon dioxide can be released.
