17. Good experiments predict all the possible outcomes and produce data which al

Question

17. Good experiments predict all the possible outcomes and produce data which allows rejection of all but one hypothesis. The experimental design and data portrayed in this figure tests the idea that tephritid flies mimic jumping spider behavior to avoid being eaten by jumping spiders. The histograms for RETREAT, STALK & ATTACK and KILL show very little difference between treatments A and B. From this lack of significant difference we conclude that ___________________________________.

        a. the jumping spiders are sometimes fooled by the flies mimicry

        c. cutting the flies wings off and reattaching them does not stop the jumping spider

        d. cutting the flies wings off and reattaching them has no effect on the predator

        e. cutting the flies wings off and reattaching them is fun for naughty children

18. In the tephritid experiment treatments C and D the spider retreats about two percent of the time, stalks and attacks about ten percent of the time and kills the fly about ten percent of the time. In presentation of an untreated housefly the jumping spider never retreats. Comparing treatments C & D with E suggests that the success of the tephritid?s mimicry ______________.

         a. is very uncommon                   b. totally random           c. a wing/behavior interaction

                                 d. largely behavioral                  e. largely wing pattern based

Explanation / Answer

17. a. the jumping spiders are sometimes fooled by the flies mimicry

18. e. largely wing pattern based

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