Which type of plant has a method of photosynthesis that is least efficient in a hot, dry climate?
1.C3 plant
2.C4 plant
3.CAM
4.all are equally efficient
1
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Which of the following happens when there are high levels of nitrogen and phosphorus in a lake or pond?
a. The growth of algae decreases significantly. b. The photic level gets deeper. c. The growth of algae increases significantly. d. Zooplankton populations increase.
The type of skin cancer that involves the top layer of skin is called:
a. melanoma b. squamous cell c. basal cell d. epidermatitis
What does the Hamilton–Zuk hypothesis state about the evolution of bright coloration?
a. Bright coloration evolved to signal resistance to all parasites. b. Coloration is costly to produce. c. Females have difficulties assessing male external parasite load. d. Endoparasitic infections drain male resources. e. B and D.
Which of the following is NOT TRUE regarding the evolutionary trends from ape-like ancestors to modern humans?
A. The evolution of larger brain size facilitated the evolution of bipedal posture. B. The evolution of bi-pedal posture would have facilitated long-distance travel since walking on two legs is more energetically efficient than four legs. C. The evolution of bi-pedal posture would facilitate tool use by freeing up the hands. D. Many primates are partially bi-pedal as indicated by knuckle-walking.