To determine the age of a woody twig, one counts the
(a) nodes.
(b) leaf scars.
(c) lenticels.
(d) regions between sets of terminal bud scale scars.
(d) regions between sets of terminal bud scale scars.
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You look outside and realize that your grass needs to be mowed. You pick up the container of gasoline and see that you have approximately a third of a gallon left. You hypothesize that this amount will be enough to mow your entire lawn. Unfortunately, half way through mowing your lawn you run out of gasoline. You grumble and think to yourself that the next time you mow the lawn, you hypothesize
that you will need to have at least two-thirds of a gallon of gasoline available. How did the results of your lawn-mowing experience influence the validity of your new hypothesis for future gasoline needs? A. Your prediction proved that your hypothesis is correct. B. Your hypothesis was supported by trial and error. One more trial added to your data set. C. The hypothesis was invalidated by your experimental evidence. D. Your prediction of future gas needs is based on experimental data and therefore increases the validity of your hypothesis.
Refer to Figure 40.12 in your text. If you found a mammal skull that had large, pointed canines and relatively narrow, blade-shaped molars and pre-molars, you could infer that it came from an animal specialized for feeding on:
A. primarily meat. B. primarily tough plant material. C. primarily soft plant material, such as fruit. D. a combination of meat and tough plant material. E. a combination of meat, soft plant material such as fruit, and tough plant material.
Which antifungal drug inhibits cell division of the fungus?
A. Amphotericin B B. Griseofulvin C. Fluconazole D. Ketoconazole (Nizoral) E. Terbinafine (Lamisil)
The right ventricle is to the pulmonary trunk as the left ventricle is to the ________.
A. left common carotid artery B. aorta C. left pulmonary vein D. inferior vena cava E. superior vena cava