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. (4 points)
Dragonflies are ectothermic organisms, meaning they rely on external sources to regulate their body temperature. By perching in the obelisk pose, where their abdomen is pointed upward, dragonflies can minimize the surface area exposed to direct sunlight. This reduces the amount of heat absorbed by their bodies, helping to prevent overheating. Additionally, this posture allows for increased airflow around their wings and abdomen, aiding in evaporative cooling. Perching in the obelisk pose therefore helps dragonflies regulate their body temperature and prevent excessive heat buildup.
