Physically bound to a specific location, plants have to devise special ways to secure their supply of vital nutrients. Most plants have developed a root system to the nutrients they need in order to survive out of the soil. But what if nutrient-poor soils fail to provide the necessities of life? Carnivorous plants such as the Venus flytrap have found a way out of this dilemma.
source https://www.lifetechnology.com/blogs/life-technology-news-blog/carnivorous-plants-no-escape-for-mosquitoes