Ready, Aim, Fire!

The Venus flytrap (Dionaea muscipula) grows in nitrogen-deficient soils. It catches insects, to extract the nitrogen from their proteins. Insects close the trap when they brush against sensitive trigger hairs. It's now been demonstrated that these trigger hairs contain heat-sensitive cells. These cells, react to rapid temperature rises. A simulated grass fire will close all the Venus flytraps in that location (https://www.theguardian.com/science/2023/sep/20/plantwatch-venus-flytrap-fire-alarm-blaze-danger). Grass fires can be quite common (especially given climate change) in locations, where Venus flytraps grow. This 'fire alarm' may offer the plant some protection, by closing it up in response to a blaze.