Narrator: Listen to part of a lecture in a biology class. Professor: So, we've been talking about animal communication, and today I want to focus on a fascinating example: the waggle dance of honeybees. When a forager bee finds a rich source of nectar or pollen, it returns to the hive and performs this dance on the vertical surface of the honeycomb. The dance consists of a figure-eight pattern, with a straight run in the middle. The direction of the straight run relative to vertical indicates the direction of the food source relative to the sun. For instance, if the bee runs straight up the comb, that means the food is directly toward the sun. If it runs at an angle, say 40 degrees to the right of vertical, the food is 40 degrees to the right of the sun's position. Now, the duration of the waggle run, or the number of waggles, communicates the distance to the food. A longer run indicates a farther distance. Remarkably, this dance also encodes the quality of the food source—bees that perform more vigorous dances, with more repetitions, signal a richer source. However, recent research suggests that this dance is not just innate; young bees learn and refine their dance skills by observing experienced foragers. So, it's a complex behavior that combines both genetic and learned components. Any questions?
❓ 题目 What does the professor imply about the waggle dance of honeybees?
A. A. The dance is entirely instinctive and not influenced by learning.
B. B. The angle of the dance indicates the distance to the food source.
C. C. The duration of the waggle run communicates the direction relative to the sun.
D. D. The dance conveys multiple types of information and involves learning.
✅ 正确答案
D. The dance conveys multiple types of information and involves learning.