A structure that gives the sponges their phylum name
is indicated by
a. A.
b. B.
c. C.
d. D.
e. E.
Answer: e
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Severe pain in the lower right abdomen along with fever and nausea is often a sign of an infection in this structure.
A) Large intestine B) Stomach C) Esophageal cancer D) Appendix E) Mouth F) Salivary glands G) Rectum H) Cirrhosis I) Gallbladder J) Small intestine
Now extinct, tooth parts of ____ are abundant as fossils dating from the early Paleozoic to the early
Mesozoic era. These jawless fishes are considered to be the earliest vertebrates with bonelike structures.
a. acanthodians b. conodonts c. osteolepiforms d. placoderms e. ostracoderms
Which developmental event occurs last?
a. tissue specialization and growth b. gamete formation c. gastrulation d. cleavage e. fertilization
A set of SNPs close together on a chromosome is called a(n) ____________________. Fill in the blank(s) with the appropriate word(s)