When he arrived at the Galápagos Islands, Darwin did not observe the amazing tool-using "woodpecker finch" that can modify twigs to pry out grubs. Because there are no true woodpeckers on the Galápagos Islands, this behavior allows this finch to exploit an untapped food source. However, not all members of this species exhibit this behavior, which is probably learned from watching other finches. Therefore, which of the following is NOT true?
A) It is probably not "hardwired" in the brain as a behavior passed on genetically.
B) Young isolated at hatching will not know how to do this.
C) This "learned" behavior will not lead to evolutionary change in the woodpecker population.
D) There must be a great advantage to reaching this food source for this learned behavior to be repeated by most descendants each generation.
Ans: C) This "learned" behavior will not lead to evolutionary change in the woodpecker population.
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Which of the following are associated with the process of stem nodulation?
A. Nod factors are not part of stem nodulation. B. A common bacterial species associated with stem nodulation is Bradyrhizobium. C. Bacteria enter through ruptures in the stem epidermal cells. D. All of these are associated with stem nodulation.
Which of the following is the path an oxygen molecule would take from the air outside your body to your blood?
A. Alveoli ® bronchioles ® bronchi ® trachea ® capillaries B. Bronchi ® alveoli ® trachea ® bronchioles ® capillaries C. Bronchioles ® trachea ® alveoli ® bronchi ® capillaries D. Trachea ® bronchi ® bronchioles ® alveoli ® capillaries
Cattle egrets have a ________ relationship with African Cape buffaloes.
A. predator-prey B. parasitic C. competitive D. commensalistic
Tunde is abnormally slender. Which of the following conditions is she more likely to have compared to an obese person, given the information in this chapter?
A) hypothermia and injury due to trauma B) heartburn and indigestion C) heart disease and stroke D) cancers