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I am not sure if this is a correct answer to your question, because i am no expert on fowl, but I am not aware of birds ever having gill slits in there formation. Humans have slits that have been misconstrued to be gill slits but those are there to help with the formation of your neck and ears.
I imagine that the two cases are related, but, like I said, I am no expert on birds.
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How do agnatha breath?
by the gill slits
What type of embryos have pharngeal slits?
All chordates embryos have pharngeal 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.
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.
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 types of embryos have pharyngeal slits?
all chordates
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 are the openings in the throat region of a fish that lead to the gill chamber?
gill slits
Are people born with gill slits?
yes.
Why does comparative embryology show similarities between organisms that do not appear to be similar as adults?
Comparative embryology is the study of the similarities and differences in the embryos of different species. Similarities in embryos are evidence of common ancestry. All vertebrate embryos, for example, have gill slits and tails. All of the animals except for fish, lose their gills slits by adulthood. Some of them also lose their tail. In humans, the tail is reduced to the tail bone. Thus, similarities organisms share as embryos may be gone by adulthood. This is why it is valuable to compare organisms in the embryonic stage
The openings in the throat region of a fish that lead to the gill chamber are called?
gill slits
How many external gill slits does the lamprey have?
7
