Try to think about this: you sit down and begin to eat a tomato. Just then, the tomatostarts to shout! This may not sound real, but a new study showed that plants made sounds(声音)when they "felt"worried.

Scientists used ultrasonic microphones (超声波克风) to "hear" the sounds oftomato plants in boxes.

What did they do?

They listened to three groups of plants.

Group 1 and Group 2 made sounds 30 to 50times(次数) every hour. Group 3 only made 1sound every hour. "When tomatoes are not worried at all, they are very quiet," Lilach Hadany from thestudy team said.

Who listens to these sounds?

Animals may listen to the sounds in the forest. For example, the sound can tell themthat the plant is worried and not good for laying eggs(产卵) on. When an animal wants toeat a plant, it can also use the sound to pick which one to eat.

The scientists also listened to other plants,like rice.They also made more soundswhen they were worried.Scientists say the study can help farmers in the future.They canhelp the plants grow better by "hearing" how plants feel.