STEVE ALLEN / SCIENCE PHOTO LIBRARY STEVE ALLEN / SCIENCE PHOTO LIBRARY
Flycatcher carnivorous plant. Carnivorous plants use scent, nectar and colour to attract insects. The interior of the pitcher structures seen here are slippery and in many species of carnivorous plants contain downward-pointing spikes, so that once an insect has entered it is unable to leave, and falls to the bottom. Liquid at the base of the pitcher contains digestive enzymes. When insects fall into the trap they are digested by the enzymes, providing the plant with nutrients, such as phosphorous and nitrogen. Pitcher plants are typically found in nutrient-poor habitats, such as swamps. Photographed near Iguazu Falls, Argentina.
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