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Pitcher plants are carnivorous plants that have modified, pitcher-shaped leaves to trap insects and other small prey. These plants typically grow in nutrient-poor soil and use carnivory to supplement their diet with essential nutrients like nitrogen and phosphorus.123

The pitcher-shaped leaves function as passive pitfall traps. Prey are attracted by nectar secreted near the pitcher's opening. Once inside, insects often slip on slick sides or are unable to climb out due to downward-pointing hairs, eventually drowning in a digestive fluid at the bottom. This fluid contains enzymes that break down the prey, allowing the plant to absorb the nutrients. Some species, like Nepenthes rajah, have evolved unique relationships, using their pitchers to collect animal feces for nutrients.243

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