In which phylum of marine animals did symmetrical body plans first evolve?
A) Radiata
B) Ctenophora
C) Cnidaria
D) Echinodermata
E) Parazoa
Correct Answer:
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Q2: Eumetazoa can be subdivided into two principal
Q3: Select the incorrect statement about deuterostomes from
Q4: Solid worms that lack a body cavity
Q7: All of the following features are associated
Q7: Two outwardly dissimilar groups,the _ and the
Q9: Protostomes develop through
A)spiral cleavage.
B)radial cleavage.
C)axial cleavage.
D)polar cleavage.
E)protocleavagE.
Q10: Which of the following features in embryonic
Q11: Animals are multicellular heterotrophs and obtain their
Q12: In the animal subkingdom _,the animals lack
Q14: The embryonic layer found only in bilaterally
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