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Pharyngeal slits are not gill slits. They are filter-feeding organs in non-vertebrates, and are used to strain matter and food from water.
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What organisms have pharyngeal gill slits and a dorsal hollow nerve cord at some time in their development?
Chordates
Why is the number of pharyngeal gill slits in sharks fewer than that of other marine fishes?
"Jaws are believed to have evolved from the first pair of gill arches of agnathans. The second pair of gill arches became support structures for the jaws." - Biology Laboratory Manual, Ninth Edition Darrel S. Vodopich and Randy MooreSo, sharks have fewer gill slits because the first two pairs became the jaw and the structural support for the jaw.
Do frogs have Pharyngeal Pouches?
No
At some point in their lives all chordates have what characteristics?
All chordates have a notochord at some stage in their development, even if it is only at the embryonic stage. The notochord is a flexible structure located in front of the dorsal nerve, which all chordates also have.
What functioned first does a chordate pharyngeal slits appear to have?
Chordate pharyngeal slits appear to have functioned first as suspension-feeding devices.
What do Pharyngeal pouches become in Fish?
gill slits
What are the characteristics of nonvertebrate chordate?
Chordates are the organisms that have a rod like cartilagenous structure called notochord which gives rise to nervous system. These have pharyngeal gill slits. Nonchordates are the organisms that do not have a notochord. These do not have pharyngeal gill slits.
What are the respiratory organs of chordates?
Gills I think, like pharyngeal gill slits ... maybe ....
What organisms have pharyngeal gill slits and a dorsal hollow nerve cord at some time in their development?
Chordates
What is the main characteristic of chordate?
They are: a. a dorsal, hollow nerve chord b. a notochord c. pharyngeal gill slits d. and a post-anal tail
What four characteristics set Chordates apart from other organisms?
for plato users the answer is B. notochrd, nerve cord, pharyngeal gill slits, postanal tail
All vertebrate embryos develop gills during one of the many growth phases in their development?
It would be more appropriate to say that all vertebrate embryos develop pharyngeal gill slits during one of the many phases in their embryonic development. This is because while gills are specifically present in fishes, pharyngeal gill slits are a general chordate feature.
Do lancelets have pharyngeal pouches?
Yes they have Pharyngeal Pouches!!!=)
Why is the number of pharyngeal gill slits in sharks fewer than that of other marine fishes?
"Jaws are believed to have evolved from the first pair of gill arches of agnathans. The second pair of gill arches became support structures for the jaws." - Biology Laboratory Manual, Ninth Edition Darrel S. Vodopich and Randy MooreSo, sharks have fewer gill slits because the first two pairs became the jaw and the structural support for the jaw.
What organs do most fish breathe with?
Gills provide means of respiration for most fishes. Gills function very similar to that of our lungs. Pharyngeal gill slits usually help to filter out waste particles during breathing in of the water.
What is pharyngeal erythema?
Pharyngeal erythema is also known as "red throat" which is usually a sign of infection or inflammation. For example, symptoms of strep throat can include pharyngeal erythema.
What is evidence of an unused body structure?
The traditional example in humans is the appendix. In most modern mammals the pharyngeal gill slits are another example but only appear during prenatal development. TLDR ; you don't use the gills you develop or your appendix
