A plant or animal that lives on or within another plant or animal and takes food or protection from it without giving any service in return.
Organism that derives its nutrients and energy from a living host.
An organism obtaining nourishment from a host organism.
A plant that derives all, or part of, its nourishment from another plant (the host), by means of suckers attached to the host’s roots or stems. Total parasites usually have scale-like tiny leaves and no green chlorophyll; partial parasites have at least some green leaves.
A plant which grows upon another, stealing moisture and nourishment from its host. Mistletoe is an example; more common and less welcome are the parasitic fungi that cause plant diseases.
A plant or animal that lives off the host but does not contribute anything to the welfare of the host, symbiotic relationship.
A plant or animal which lives on or inside another organism and draws nourishment from that organism.
A plant which grows upon or within another, stealing moisture and nourishment from its host. Mistletoe is an example; more common and less welcome are the parasitic fungi that cause plant diseases.
A plant, animal or microbe living upon or within another living organism, at whose expense it derives advantage without compensation. In bacteriology and allied sciences parasites may be pathogenic (disease producing) or commensal (harmless).
Organism that lives in or on another organism (the host), obtaining nourishment from it.
An organism that survives by feeding on another.
A test done on blood to determine the level of this hormone. Abnormally high levels may increase the amount of calcium and decrease the phosphorus levels in the circulation.
An organism that obtains nourishment by living in or on other organisms, called hosts, producing disease in human or animal hosts. Parasites that cause infections in humans are most common in areas of the world where water safety standards are poor, such as developing countries. In the United States, some kinds of parasites have been found in well water, rivers, lakes, and streams. The most common symptoms caused by parasitic infection include diarrhea, weight loss, loss of appetite, abdominal cramps, and mild fever.
Any living thing that lives in or on another living organism. The parasite, which may spend all or only part of its existence with the host, obtains food and/or shelter from the host and contributes nothing to its welfare. Some parasites cause irritation and interfere with bodily functions; others destroy host tissues and release toxins into the body, thus injuring health and causing disease. Human parasites include fungi, bacteria, viruses, protozoa, and worms.
An organism which lives in or on another organism, known as the host. A parasite derives all its nourishment from the host but provides no benefits in return. It may damage the host’s bodily functions and in extreme cases cause the death of the host. Human parasites include worms, fungi, bacteria and viruses.
An organism that lives within, upon, and at the expense of another organism (its “host”), causing harm.
A plant living in or on another plant and obtaining its food from it.