When do plants eat insects?

Plants growing in bogs and peaty areas often need to supplement their food supply by catching insects. Bog water contains very little nitrogen, but some bog plants can obtain this substance by catching and digesting insects. They are known as insectivorous plants. Other insectivorous plants are covered with sticky tentacles that trap flies. The most remarkable is the Venus flytrap plant. It has two clawed plates that slam together when a fly walks over them and touches a trigger hair. Other insect-eating plants are aquatic, catching tiny crustaceans in bladder-shaped underwater traps. Some of the largest insectivorous plants live in the tropical rainforests.

Fact file:

Some insects use camouflage to blend into their environment, protecting themselves from predators. 


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