Which of the following animals would you predict would have the highest mass-specific metabolic rate?
A. a lizard
B. a squid
C. an elephant
D. a goose
E. a hummingbird
E. a hummingbird
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Oxygen levels in the photic zone fluctuate over the course of a 24-hr period. If you were measuring dissolved oxygen over the course of the day, when would you expect to see the lowest levels of oxygen and why?
A. Mid-morning -- because fish are most active and their respiration rates are highest. B. Early afternoon -- when the surface water warms up and sinks to the bottom. C. Mid-afternoon -- because the activity of the Calvin cycle (the dark reactions) of photosynthesis are at their peak. D. Early evening -- when animals come to feed and disturb the surface waters. E. During the night -- because the light reactions of photosynthesis are inactive. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about oxygen levels? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
The term that refers to those microbes found as symbionts in a short relationship of a nongrowing nature is ________.
Fill in the blank(s) with the appropriate word(s).
A mark-recapture program marked 10 individuals in the first catch. The second catch has a total of 8 individuals, 4 of which were recaptures. What is the estimate of total population size?
A. 22 B. 24 C. 42 D. 20 E. 40
Figure 24.6
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Refer to the illustration above of an adult sponge for questions 10 and 11.
In the accompanying figure, a cell type that distributes breakdown products of digestion to other cells in the sponge body is identified by the number ____.
A. 1 B. 2 C. 3 D. 4 E. 5