Respuesta :
Answer:
1. That they all have gill arches
2.Comparative Embryology
3. Here are excellent discussion of adult-stage related features (fins and wings; scales/skins) and functions (movement mechanisms; lay eggs) strengthens this response.
Explanation:
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1. Everything has a gill arch
3. Here is a good discussion of adult-related features (fins and feathers, scales/skin) and functions (mechanism of movement, spawning) that enhance this response.
2. Comparative embryology.
In many reptiles and birds, a primitive stripe develops within the disk of cells, and the three germinal layers arise. The division of the mass of embryonic cells created by cleavage begins with gastrulation and the creation of the three germinal layers.
How are different Fish, amphibians, reptiles, and birds?
Fish, amphibians, reptiles, and birds are all members of the animal kingdom with distinct characteristics. They're all vertebrates, which means they have a backbone and an internal skeleton. Because of their distinct features and characteristics, these creatures are divided into groups.
Hence concluded that early embryos have gill arches common with Fish, amphibians, reptiles, and birds.
To learn more about embryos refer to :
https://brainly.com/question/1191674