What is a major function of pheromones in insect colonies?

What is a major function of pheromones in insect colonies?

• A. Pheromones mark territory only.
• B. Pheromones coordinate defense only.
• C. Pheromones coordinate foraging, reproduction, and defense, leading to colony-level organization.
• D. Pheromones regulate temperature.

Answer: (C)

Pheromones act as coordinated signals that organize multiple essential activities in a colony, enabling the group to function as a cohesive unit. Trail pheromones guide foraging by marking paths to resources and recruiting workers, making collective food gathering efficient. Queen pheromones regulate reproduction and worker roles, helping maintain the social structure and division of labor. Alarm pheromones quickly mobilize nest mates to defend the colony, coordinating a rapid defensive response. Because these signals influence foraging, reproduction, and defense together, they produce colony-level organization rather than just a single isolated function. The other options describe only one aspect (like territory marking or defense) or miss the broader, integrative role pheromones play in coordinating the colony. Temperature is not primarily regulated by pheromones in the same way across species.

Pheromones act as coordinated signals that organize multiple essential activities in a colony, enabling the group to function as a cohesive unit. Trail pheromones guide foraging by marking paths to resources and recruiting workers, making collective food gathering efficient. Queen pheromones regulate reproduction and worker roles, helping maintain the social structure and division of labor. Alarm pheromones quickly mobilize nest mates to defend the colony, coordinating a rapid defensive response. Because these signals influence foraging, reproduction, and defense together, they produce colony-level organization rather than just a single isolated function. The other options describe only one aspect (like territory marking or defense) or miss the broader, integrative role pheromones play in coordinating the colony. Temperature is not primarily regulated by pheromones in the same way across species.