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Pitcher plant gets nitrogen from insects that they catch,but how do they attract them?
Carnivorous plants naturally give off a sweet odor to attract insects. Lured by this odor, insects come to the plant and are trapped by its leaves. The traps vary in kind from plant to plant. For example the Venus Fly trap catches its food in a different way then the Pitcher plant for instance. The major difference between traps is that some have moving parts, and some do not.Once an insect has been trapped in a plant's lure, it must be turned into useful nourishment. Insect eating plants do not chew their food like you or I do. Instead, the plants digest food in much the same way as food is digested in the human stomach. The leaves of these plants are actually like tiny stomachs! After the leaves trap an insect, they begin to give off digestive juices. The juices first suffocate the insect and gradually dissolve its body. Nitrogen, salts and other minerals from the insect's body are absorbed by the plant, enabling it to grow.


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