Dragonflies are flying insects. In the summer, dragonflies can be seen perched on tree branches in an obelisk pose (i.e., a handstand position with the tip of their abdomen pointing upward). In 3-5 sentences, describe how dragonflies might control their body temperature and give reasons for why they might perch in this pose.

Answer 1

Dragonflies rely on behavioral thermoregulation to control their body temperature, as they are ectothermic (cold-blooded) insects. By perching in the obelisk pose, with their abdomen pointing upward, they can minimize the exposure of their body to direct sunlight, which helps to prevent overheating while maximizing heat absorption when necessary. This position allows them to adjust their body angle in relation to the sun's rays, enabling them to regulate their temperature more effectively. Additionally, by staying cooler, dragonflies can maintain optimal metabolic rates necessary for hunting and mating activities during the warmer months.