Which of the following is an example of dendrochronology?
A) measuring seedling recruitment
B) counting juveniles in a population
C) measuring finger bone size over time
D) counting tree rings
D
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Fall leaf color on deciduous trees is a result of
A. the production of more accessory pigments because of the cooler temperatures. B. the reduction in the production of accessory pigments. C. cessation of chlorophyll production, which allows the accessory pigments to be revealed. D. the increased angle of the sun during the fall, which reflects more of the accessory pigments.
Due to a mutation in a smooth muscle gene, the blood vessels in the skin of a certain strain of mouse become dilated when temperature falls below a certain point. Based on the likely outcome of this mutation, what precautions should the researchers take to maintain the health of their mice?
A. The mouse room should be maintained at a cooler than normal temperature. B. The mouse room should be consistently maintained at a warm temperature. C. The mice will have weak muscles, and should be provided with exercise wheels. D. The mice will be susceptible to high blood pressure, and should not be provided with exercise wheels. 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 mammalian body temperature? What other information is related to the question? Choose Answer Given what you now know, what information 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?
All of the following are simple fruits EXCEPT
a. pea pods. b. pineapples. c. acorns. d. Capsella. e. none of the above.
Indicator bacteria in water quality testing are
a) intestinal residents of birds and mammals b) readily identifiable c) usually coliforms and enterics d) all of the above