Simple Arithmetic

When an insect meanders on to one of these carnivorous plants, every step is counted and converted into chemical signals. This helps the plant to catch and ultimately work out how to go about digesting its prey.

Touching one of the trigger hairs isn’t enough to spring the trap, only to prime it. A second touch in quick succession snaps it shut.

Once closed, the plant measures the “proportions” of the insect by counting touches from the inside, basically the panic response, to decide the amount of digestive enzymes to release according to its size.

Via @newscientist