Nhận biết (M1)

Some animals evade predation with the help of contrasting markings that signal toxicity. Lisa Taylor and team studied how jumping spiders behave toward termites (their regular prey) to which solid black, solid white, or black-and-white striped (i.e., contrasting) capes were affixed. Each spider was placed in a clear container in the center of a circular dish in which six termites, two with each of the three cape types, could be seen. Noting which termites the spiders first looked at and which termites they ultimately targeted, the researchers concluded that contrasting markings were a deterrent.

Which choice best describes data from the table that support Taylor and team’s conclusion?

• A.

  Half of the spiders that first looked at a termite wearing a black-and-white striped cape attacked a termite wearing a solid white cape, and the other half of those spiders were just as likely to attack a termite wearing a black-and-white striped cape as they were to attack a termite wearing a solid black cape.

• B.

  For each type of cape, a majority of the spiders that first looked at a termite wearing that type of cape attacked a termite wearing that same type of cape.

• C.

  Regardless of the type of cape worn by termites the spiders first looked at, the large majority of spider attacks were on termites wearing solid-color capes.

• D.

  None of the spiders that first looked at a termite wearing a solid white cape attacked a termite wearing a black-and-white striped cape.