Directions: Use the information provided and your knowledge of Life Science to answer the following questions. Show all work where necessary.
Directions: Use the information provided and your knowledge of Life Science to answer the following questions. Show all work where necessary.
Honeybees live in colonies that depend on group behavior to maintain stable temperature conditions - a key factor for their survival, especially in cold climates. When outside temperatures drop below about
In these clusters, bees on the outer layer press tightly together, forming an insulating shell, while inner bees remain in constant motion, vibrating their flight muscles to generate heat. This combination keeps the cluster core at around
Research by Heinrich (1981) and later studies using thermal sensors show that core temperature remains remarkably constant even when ambient air falls well below freezing. For example, when air temperature dropped from
Experimental studies also reveal that cluster size affects survival. Smaller groups lose heat quickly and have lower survival rates, while larger groups are able to maintain warmth longer. In controlled trials, bee groups of 2,000–3,000 individuals survived subfreezing nights, while groups below 1,000 often perished due to rapid heat loss.
This cooperation is essential: no single bee can produce or conserve enough heat alone. By clustering, bees share energy costs, reduce individual heat loss, and ensure colony survival. The phenomenon is a clear example of group behavior improving survival under environmental stress.
Provide the evidence, and explain your reasoning for the claim:
“Some animals form groups that help members survive.”
Evidence:
Reasoning:
Refer to Figures 1–2 in the Honeybee Heat Regulation resource.
How does group size affect survival in cold temperatures?
Answer:
Why is the clustering behavior of honeybees an example of group cooperation?
Which statement best explains how clustering behavior is an adaptation?
If average winter temperatures became colder for longer periods, how might honeybee clustering behavior change over time?