There are certain plants that feed upon insects. These plants are called carnivorous plants. Most of carnivorous plants are found in and around water. Bladderwort, Venus flytrap, Pitcher plant and Cobra lily are the examples of carnivorous plants. These plants grow in soil that lacks nutrients. Due to this reason they have evolved and developed insect traps to meet their nutritional needs. For example, a pitcher plant has hair-like growth and its shape resembles a pitcher full of nectar. Insects get attracted to it and when they come close, they slip and slide down into the pitcher.