Hawaiian honeycreepers exhibit diverse beaks that allow them to feed on insects, flowers, and seeds in their different
habitats. This is an example of ____.
a. a derived trait
b. convergent evolution
c. morphological convergence
d. morphological divergence
e. a key innovation
ANSWER: e
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An opening in leaves that functions in the
exchange of gases is called a a. cuticle. b. stoma. c. guard cell. d. pit. e. pore.
Franklin’s work with three-dimensional models was
similar to that of a. Pauling’s. b. Watson and Crick’s. c. Wilkins’. d. Chargaff’s. e. all of these.
Signaling molecules in animals are
a. neurotransmitters. b. hormones. c. pheromones. d. local signaling molecules. e. all of these.
All of the following are correct about agar except
A. it is flexible. B. it is solid at room temperature. C. it solidifies below 42°C. D. it is a source of nutrition for bacteria. E. it melts at the boiling point of water (100°C).