Animals that have no circulatory system, such as flatworms, rely on _______to deliver nutrients and gases to their tissues.
A. diffusion
B. osmosis
C. hemolymph
D. the lymphatic system
E. the coelom
Answer: A
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Whose discovery of streptomycin stimulated an intense search for other antibiotics?
A. Waksman B. Pasteur C. Fleming D. Ehrlich
Seed packets give a recommended planting depth for the enclosed seeds. The most likely reason some seeds are to be covered with only -inch of soil is that the _____
A) seedlings do not produce a hypocotyl B) seedlings do not have an etiolation response C) seeds require light to germinate D) seeds require a higher temperature to germinate E) seeds are very sensitive to waterlogging
The graph here shows the results of growing one strain of a crop plant on soils with different nitrogen contents. If a different strain of the same plant were grown on the same soils, you would predict that:
A. it would respond the same way to nitrogen supplementation because they are the same plant. B. it would respond completely differently to nitrogen supplementation because they are different strains. C. it could respond the same way or differently; different genotypes can, but may not always, respond differently to the same range of environments. D. it could respond the same way or differently; the environment has too many variables to predict. E. None of these choices is correct.
Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer?
What will be an ideal response?