Sharks differ from most other fishes in that they lack ____
a. lungs
b. scales
c. bony skeletons
d. paired appendages
e. jaws
ANSWER: c
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The bright coloration of the various species of poison arrow frogs from the Amazon is
A. receptivity. B. aposematic. C. intimidation. D. Mullerian mimicry. E. Batesian mimicry.
Which of the following is NOT true about IgG type antibodies?
a. It is the most common/abundant type of antibody in the blood b. It is the most common/abundant type of antibody in body secretions c. It can cross the placenta and protect the fetus. d. It is the longest lasting type of antibody produced.
An element required by bacteria specifically for the synthesis of both amino acids and nucleic acids
What will be an ideal response?
Characterize the life cycle of cnidarians.
A. Some species have only medusae and others have both polyps and medusae. B. Some have only polyps, some have both polyps and medusae, and others have medusae and a reduced polyp stage. C. Some species have polyps and others have medusae, but no species has both. D. Some species have only polyps and others have both polyps and medusae. E. All species have both polyps and medusae.