While excavating a cave in Spain, you stumble across a skeleton that looks to be human. Upon closer examination, you find that the bones are disproportionately short and thick, and the skull has massive brow ridges. Carefully arranged around the skeleton are a variety of stone tools. You have most likely found the remains of a(n)
A) Cro-Magnon.
B) australopithecine.
C) early hominin.
D) Neandertal.
E) prosimian.
Correct Answer:
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Q53: Why are developmental biologists especially interested in
Q54: Nephridia are found in
A) jawless fishes.
B) echinoderms.
C)
Q55: Which of the following is a hominin?
A)
Q56: What are the key features of chordates?
A)
Q57: Molluscs are
A) deuterostomes.
B) acoelomates.
C) protostomes.
D) pseudocoelomates.
E) segmented.
Q59: The closest living relatives of modern humans
Q60: Which feature is lacking in sponges?
A) multicellularity
B)
Q61: Which statement is inconsistent with invertebrate animals?
A)
Q62: Which statement is inconsistent with echinoderms?
A) The
Q63: In the replacement model of evolution, where
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