Which of the following animal phyla is distinguished by a lack of tissues?
A) Roundworms
B) Annelids
C) Echinoderms
D) Flatworms
E) Sponges
Correct Answer:
Verified
Q5: The only animals that lack tissues are
A)
Q6: Between the organs and the body wall,
Q7: How many tissue layers are in the
Q7: The common ancestor of sponges and other
Q11: The major difference between protostomes and deuterostomes
Q13: Which of the following characteristics is often
Q14: An arthropod embryo has _germ layer(s).
A) no
B)
Q14: All animals with tissues have
A) two germ
Q15: One trend in the evolution of animals
Q18: A cnidarian, which is radially symmetrical, has
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