When using a cladistic approach to building phylogenies, which of the following is considered most important for classification?
A) shared primitive characters
B) analogous primitive characters
C) shared derived characters
D) the number of homoplasies
E) overall phenotypic similarity
Answer: C) shared derived characters
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Each of the following is part of the systemic circuit EXCEPT the
A) aorta. B) left ventricle. C) aortic semilunar valve. D) pulmonary arteries. E) superior vena cava.
Which of the following are used to distinguish species from one another?
A. differences in the physical characteristics of organisms B. differences in behavior C. differences in metabolism D. All of the choices are correct.
In muscles, aerobic respiration uses glucose derived from stored glycogen as energy source for the first ten minutes of activity; after over half an hour, _____________ becomes the main fuel source.
A. lactate B. fatty acid C. myoglobin D. protein E. blood glucose
A new plant nutrient is discovered that is needed at 5g/kg of plant dry matter and is required for photosynthesis. When this nutrient is added to the plant as a fertilizer, plant growth increases in comparison to a control group that did not receive the nutrient fertilizer.This nutrient is (check all that apply)
A. a micronutrient. B. a macronutrient. C. an essential element. D. a limiting factor.