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Difficulty: MediumInferences from the Text

In the mid-twentieth century, Karl von Frisch posited that foraging honeybees (Apis mellifera) communicate the location of floral resources via a rhythmic "waggle dance" that encodes directional bearings relative to solar azimuth and distance via waggle duration. Critics led by Adrian Wenner challenged this symbolic communication paradigm, maintaining that recruits locate forage exclusively by following floral scent plumes and memory of ambient odors. To evaluate these competing models, researchers transported recruit bees to an unfamiliar release site devoid of established scent trails immediately after they observed a waggle dance. Upon release, the recruits flew directly along the compass bearing and distance indicated by the dance before switching to localized, circular search patterns only after failing to find the expected food at the predicted location.

Which of the following inferences regarding honeybee foraging recruitment is most strongly supported by the passage?

  1. A
    Recruit bees rely exclusively on solar calculations and never utilize airborne floral odors during any phase of food discovery.
  2. B
    Honeybees possess specialized neural structures in the central brain dedicated to computing flight velocity from environmental optic flow.
  3. Initial flight trajectories of recruit bees are governed by spatial information obtained from the dance rather than immediate tracking of continuous scent trails.Answer
  4. D
    The displacement experiment demonstrated that floral odors play no functional role in guiding bees toward food sources.
  5. E
    The symbolic waggle dance communication system is unique to Apis mellifera and does not occur in other social insect taxa.

Answer

Initial flight trajectories of recruit bees are governed by spatial information obtained from the dance rather than immediate tracking of continuous scent trails.
The passage details an experiment designed to separate dance information from scent trails by releasing bees in an unfamiliar location devoid of such trails. Because the bees still flew along the bearing and distance indicated by the dance, it is logically supported that their initial trajectory is directed by spatial information derived from the dance rather than continuous tracking of an odor plume.

Step-by-Step Solution

1
Identify the experimental premise and conditions described in the text.
Recruit bees were moved to a novel release site lacking scent trails after observing a waggle dance.
Establishing the test conditions isolates which information source (dance vectors vs. odor plumes) influenced the bees' flight.
2
Analyze the observed behavior of the displaced bees upon release.
The bees flew along the exact bearing and distance signaled by the dance before engaging in local olfactory searches.
Determines that vector navigation occurred prior to and independently of local odor cues.
3
Synthesize the behavioral outcome into a valid, supported inference.
The initial path is guided by spatial data decoded from the dance rather than following a continuous odor plume from the hive.
Directly resolves the debate presented in the passage without extrapolating unstated claims.

Key Concept

Drawing logically entailed textual inferences from experimental findings without unwarranted extrapolation
Estimated Time:1m 30s
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Inferences from the Text

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