Parasites are organisms that derive some or all of their nutrients from other organisms, in a way that is not mutually beneficial. A parasitic plant is simply a plant that latches on to another plant and draws some or all of its nutrients from that plant. In some cases, this other plant may survive an attack by a parasitic plant, while in other cases the parasite may kill the other plant.
Parasitic plants may be something that gardeners or naturalists have to keep an eye out for, especially in regions where an invasive parasitic plant species is wreaking havoc among native species. There are three main criteria by which a parasitic plant may be categorized, depending on how it acts. A parasitic plant may be either a stem parasite or a root parasite, depending on whether it latches on to the stem or the root of the host plant.
It may be either a holoparasite or a hemiparasite, depending on whether it does not photosynthesize itself and so must draw its chlorophyll from the host, or ... more.
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