Question

question #2
the image shows four different embryos at a similar stage of development.
based on the diagram, which statement is most likely to be true?
a all four species live in a similar habitat.
b all four species use gills throughout their lives.
c all four species have originated in the same era.
d all four species have descended from a common ancestor.

Explanation:

Embryology is a field that studies the development of embryos. Similarities in embryos (like gill pouches and tails in these different species) suggest common ancestry.

• Option A: Different species (bird, reptile, human, pig) have different habitats (e.g., birds can fly and live in various aerial - terrestrial habitats, pigs are terrestrial).
• Option B: Humans and pigs do not use gills throughout their lives.
• Option C: There is no evidence from the embryo diagram about the era of origin.
• Option D: Similar embryonic structures (gill pouches and tails) imply a common ancestor.

Answer:

D. All four species have descended from a common ancestor.