What is the Venus Flytrap?

The Venus flytrap is a meat-eating plant. Its leaves look like small jaws and have tiny hairs inside. If a bug, fly, or small frog touches these hairs twice in a short time, the trap closes quickly - usually in less than a second.

Scientists' Curiosity

For years, scientists wondered how the trap could close so fast. Now, new research has revealed the secret of this natural wonder. Dr. Yoël Forterre, a physicist and research leader at the French National Scientific Research Center (CNRS) and Aix-Marseille University, said, 'When scientist Charles Darwin saw these plants moving quickly, he thought they had muscles, but plants don't have muscles and nerves.'

The Plant's Fast Movement

For a long time, many scientists thought the trap might close because of the movement of water. The idea was that when the hairs were touched, water would move from one side of the leaf to the other. This would make one side swell and the other side shrink, like a squishy toy. Scientists thought that if this happened fast enough, the leaf could bend and close.

Research Results

But a group of scientists wanted to test this idea. They measured how water moved in a Venus flytrap leaf and found that it took 30-60 seconds for the water to move from one side to the other. This was too slow for the trap to close.

Electric Signal

Scientists now believe that the trap doesn't close because of the movement of water. When the trap is open, different parts of the leaf are pulling in different directions. If one part suddenly becomes more flexible, the leaf can change shape quickly. Scientists think that when a bug touches the hairs, the plant sends a fast electric signal along the leaf. This is like a message to the rest of the trap, saying something is on top. When this message arrives, the outside of the leaf becomes more flexible, and the inside stays stiff. This difference helps the trap close quickly.

Conclusion

Dr. Forterre said, 'Plants are amazing. This shows how all plants can sense their environment, carry information, react, defend themselves, and feed.' The Venus flytrap is one of nature's wonders, and scientists were curious about how it moved so fast. Now, the secret of this natural wonder has been revealed.