In Figure 26.09 (above) the animals across are a lancelet, lamprey, salmon, lizard, and rabbit. If the salmon, lizard, and rabbit are an ingroup, which animals above would be an outgroup and which characteristics are necessary to be in the ingroup?
A. Lamprey and lancelet; notochord and vertebrae.
B. Lamprey only; vertebrae, hinged jaw, tetrapod, and mammary glands.
C. Lancelet and lamprey; hinged jaw, tetrapod, and mammary glands.
D. Lancelet, lamprey and salmon; hinged jaw, tetrapod, and mammary glands.
E. Lizard and rabbit; tetrapod and mammary glands.
C. Lancelet and lamprey; hinged jaw, tetrapod, and mammary glands.
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Ctenophores capture food by:
A. sticky mucus on their tentacles that capture small invertebrates. B. adhesive glue cells that trap prey. C. stinging hair cells that immobilize small invertebrates. D. digging through the bottom mud for small invertebrates. E. filter feeding
A fertilized egg implants when it becomes a ______.
A. morula B. corpus C. placenta D. blastocyst
Allergy is a ________ response to __________ antigens
a. hypersensitive; environmental b. hyposensitive; cellular c. normal level; microbial d. mixed; protein e. mixed; microbial
Figure on p. 737
Use the figure above showing the process of gastrulation to answer the following question.
The letter "C" in the accompanying figure represents ____.
A. ectoderm B. endoderm C. mesoderm D. neural plate E. yolk