Quick Answer: Which Is Obligate Parasite?

What are the examples of facultative parasite?

A facultative parasite is an organism that may resort to parasitic activity, but does not absolutely rely on any host for completion of its life cycle.

Examples of facultative parasitism occur among many species of fungi, such as family members of the genus Armillaria..

What is the difference between facultative and obligate parasite?

Thus the facultative parasite is one which typically kills the host cells and then lives on the dead remains, in contrast to the obligate parasite which, when invading a suitable host, lives for some time in a symbiotic state with the latter.

What does parasite mean?

A parasite is an organism that lives in another organism, called the host, and often harms it. It depends on its host for survival. Without a host, a parasite cannot live, grow and multiply. … Parasites, unlike predators, are usually much smaller than their host and they reproduce at a faster rate.

Are viruses obligate parasites?

Viruses are small obligate intracellular parasites, which by definition contain either a RNA or DNA genome surrounded by a protective, virus-coded protein coat. … For propagation viruses depend on specialized host cells supplying the complex metabolic and biosynthetic machinery of eukaryotic or prokaryotic cells.

What are the two types of parasite?

A parasite is an organism that lives on or in a host organism and gets its food from or at the expense of its host. There are three main classes of parasites that can cause disease in humans: protozoa, helminths, and ectoparasites.

What is a temporary parasite?

temporary parasite one that lives free of its host during part of its life cycle.

Which parasite Cannot survive artificial medium?

LactobacillusLactobacillus is an intercellular parasite present in oral and intestinal tracts of animals and does not need live cells to be cultured.

What is obligate parasite example?

Some bacteria are obligate parasites and grow only within a living host cell. Rickettsia and Chlamydia, for example, grow in eukaryotic cells, and Bdellovibrio grow in bacterial cells. Treponema pallidum is difficult, if not impossible, to grow in culture, probably because it requires low oxygen tension and low…

What is meant by obligate parasite?

An organism that cannot survive independently of a host species. Some pathogenic organisms, including the smallpox and poliomyelitis viruses, are obligate parasites. From: obligate parasite in A Dictionary of Public Health »