Welcome to Slow English FM. This is Daily Random Facts, where one surprising detail opens a door to the natural world. Today: how a Venus flytrap responds to touch.

EmmaA Venus flytrap can turn touch into an electrical signal. These signals help the plant respond to prey caught in its trap. Researchers describe this as sensing and responding, not as human-like thought.

The flytrap is a small plant native to parts of North and South Carolina. Its trap is made from two modified leaf halves. Tiny hairs inside respond when something touches them. A touch can cause an action potential, a brief electrical signal in the plant.

EmmaIn a 2016 study, researchers reported that two such signals could close the trap. After that, further signals from captured prey can start another part of the process. The researchers linked those signals to jasmonate, a plant chemical involved in the response, and to the release of digestive enzymes. These enzymes help break down prey. The study also reported uptake of sodium, a nutrient associated with the prey.

Why go to this effort? The U.S. Fish and Wildlife Service says insects provide nutrients that are scarce in the plant’s surroundings. But insects are not its main energy source. Like most plants, the flytrap gets most of its energy from photosynthesis, the process of using light to make food. Its prey is mostly crawling animals such as ants, spiders, beetles, and grasshoppers.

EmmaClosing the trap does not mean digestion starts at once. The Royal Botanic Gardens, Kew explains that the hairs must be triggered several more times before digestive enzymes are released. This helps the plant avoid spending energy on prey that is too small to be worth digesting. The repeated signals are part of a physical response, not a conscious calculation.

The plant’s limited natural home is under pressure. The U.S. Fish and Wildlife Service lists habitat loss and poaching as threats. It recommends protecting habitats and buying nursery-grown plants rather than plants taken from the wild. A tiny electrical signal, then, is part of a remarkable way to catch food—and a reminder of a plant worth protecting. Thanks for listening to Daily Random Facts on Slow English FM.