Numerical answer
Five sentences are given below, numbered 1–5. Four of them form a coherent paragraph; one does not belong. Identify the sentence number that does not fit.
1. Honeybee colonies communicate the location of food sources through the 'waggle dance', a figure-eight movement that encodes direction and distance relative to the sun.
2. The angle of the dance's straight run relative to vertical corresponds to the angle between the food source and the sun's position.
3. The duration of the waggle phase correlates with the distance to the food, with longer waggles indicating farther sources.
4. Bees also regulate hive temperature collectively by fanning their wings to circulate air.
5. Other bees in the hive follow the dancer closely, apparently decoding this information to fly directly to the reported location.
1. Honeybee colonies communicate the location of food sources through the 'waggle dance', a figure-eight movement that encodes direction and distance relative to the sun.
2. The angle of the dance's straight run relative to vertical corresponds to the angle between the food source and the sun's position.
3. The duration of the waggle phase correlates with the distance to the food, with longer waggles indicating farther sources.
4. Bees also regulate hive temperature collectively by fanning their wings to circulate air.
5. Other bees in the hive follow the dancer closely, apparently decoding this information to fly directly to the reported location.
Show answer and solution
Answer: 4
Sentences 1, 2, 3 and 5 all develop a single coherent thread about the waggle dance as a communication mechanism (its form, its encoding of angle and distance, and how other bees interpret it). Sentence 4, about temperature regulation by fanning wings, is an unrelated fact about bee behaviour and breaks this thread.
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