Figure 22.3
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Questions refer to the above figure.
Which of the photographs in the above figure represents a seedless vascular plant?
A. A
B. B
C. C
D. D
E. Both B and C
Answer: B
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Organisms that inhabit soil or water and breakdown and absorb the organic matter of dead organisms are called ________.
A. secondary consumers B. primary consumers C. autotrophs D. decomposers
Which of the following antibodies would most likely be involved with the immune response against a microorganism entering the digestive or reproductive tract?
A) IgA B) IgD C) IgG D) IgM E) IgE
Which of the following statements about lactic acid fermentation is FALSE?
a. It uses glucose as a substrate. b. It is inefficient compared to aerobic respiration. c. It produces two ATP molecules for every glucose molecule. d. Oxygen is the final electron acceptor of this pathway. e. Glycolysis is the only energy-yielding step of this pathway.
Speciation often occurs when a habitat becomes more heterogeneous. In Lake Victoria different species of cichlids are found in different areas of the lake. The best explanation for this speciation is that
A) natural selection favored different heritable variations in different parts of the lake. B) male cichlids that lived in deep water needed to be seen by females, so they became colorful. C) food was scarce in the lake, so some fish had to learn how to scrape algae, some had to learn to eat insects, and some had to learn to bite leaves. D) humans selected for many different traits in cichlids in order to market them to the aquarium trade.