Question 11
According to the passage, which of the following is true about the number and general nature
of figures sung by the indigo bunting?
1. They are established at birth
2. They evolve slowly as the bird learns
3. They are learned from other indigo buntings.
4. They develop after the bird has been forced onto marginal breeding areas.
5. The gradually develop through contact with prospective mates
Correct Answer : C
Question 12
It can be inferred that the investigation that determined the similarly among more than 90
percent of all the figures produced by birds living in different regions was undertaken to
answer which of the following questions?
I.How much variations, if any, is there in the figure types produced by indigo buntings in
different locales?
II.Do local populations of indigo buntings develop their own dialects of figure types?
III.Do figure similarities among indigo buntings decline with increasing geographic
separation?
1. II only
2. III only
3. I and II only
4. II and III only
5. I, II and III
Correct Answer : E
Question 13
It can be inferred from the passage that the existence of only a limited number of indigo
bunting figures servers primarily to
1. ensure species survival by increasing competition among the fittest males for the females
2. increase population density by eliminating ambiguity in the figures to which the females must
respond
3. maintain the integrity of the species by restricting the degree of figure variation and change
4. enhance species recognition by decreasing the number of figure patterns to which the bird
must respond
5. avoid confusion between species by clearly demarcating the figure patterns of each specials
Correct Answer : D
Question 14
It can be inferred that a dummy of a male indigo bunting was placed near the tape recorder
that played the songs of different species in order to try to
1. simulate the conditions in nature.
2. Rule out visual cues as a factor in species recognition
3. Supply an additional clue to species recognition for the indigo bunting
4. Provide data on the habits of bunting species other than then indigo bunting
