Perhaps more impressive are some corn and cotton plants, which when eaten by caterpillars, release chemicals in the air that attract parasitic was wasps, who fly in and ultimately kill the insects.
或許更令人印象深刻的是一些玉米和棉花植物,當他們被毛蟲吃的時候,會釋放吸引寄生蜂的化學物質到空氣中,他們就可以飛過來並且殺死這些毛蟲。就某層面來說,他們在與這些蜂類溝通。