During which time period did the animal in the accompanying figure appear?



a. Jurassic

b. Triassic

c. Permian

d. Devonian

e. Cretaceous


b

Biology & Microbiology

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Glucose and fructose both have the chemical formula (C6H12O6) so they are considered

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Variables that are always different between the experimental and the control groups are

(a) independent. (b) controlled. (c) dependent. (d) a and c.

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The physical appearance and physiology of an organism, resulting from interactions of its genetic makeup and its environment, is its

(a) phenotype. (b) hybrid vigor. (c) dominance. (d) genotype.

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In the food chain of a typical lake, which of the following would be a producer?

a. algae b. trout c. mollusk d. turtle

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