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Unformatted text preview: Where the inflorescences are defended by territorial Thistle-suckers, 100% of the nectar produced by the inflorescences is available to the territorial bird. With this information, answer the following questions. 1. (3 points) What is the total cost in kcal./day to a territorial Thistle-sucker? (30 + 20 = 50 Kcal./ day) 2. (3 points) What is the lower threshold in number of flowers that a bird has access to that would allow it to be territorial? (E + T = 50 kcal/ day; 50 kcal/ day / 5 kcal/day = 10 flowers) 3. (4 points) What is the upper threshold in number of flowers available that it would not be worth a bird exhibiting territorial behavior. (E = 30 kcal/day; E < aP = 30 < .5P; P = 60 kcal/day = 60 kcal/day / 5 = 12 flowers)...
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- Fall '09