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They need each other to live

2007-02-21 21:40:56 · 19 answers · asked by belinda b 1 in Science & Mathematics Zoology

19 answers

PARASITIC is the word you're after.

2007-02-21 21:51:30 · answer #1 · answered by Anonymous · 0 3

An organism which lives on or in another organism but damages the host organism is a parasite. Two organsims which live together with both benefiting is symbiosis (they are symbiotic). A plant which lives on another plant but gives it no benefit and does it no harm (just uses it for support!) is an epyphite!!

2007-02-22 12:49:13 · answer #2 · answered by pugsley 3 · 1 0

Symbiosis is where both organisms benefit from the arrangement such as certain plants which need fungi around their roots to generate nutrients or the bee gaining nectar and pollinating the plant.
Parasitism is where the host does not benefit such as fleas and intestinal worms which can weaken the host or spread disease.

2007-02-22 08:19:40 · answer #3 · answered by David P 4 · 1 0

Animals and Plants that live on one another are called symbiotic organisms which exist in ecosystem.

2007-02-22 06:00:33 · answer #4 · answered by light 1 · 0 1

In the plant world, you have Parasites and Epiphytes.

The former rely on the host plant to some degree for their nutrition. Some plants such as mistletoe are semi-parasitic and produce nutrition independently through photosynthesis, in addition to feeding off the trees in which they grow.

Epiphytes grow on other plants without feeding off them. They obtain nutrients from rainwater and the atmosphere without rooting into soil.

2007-02-22 06:00:16 · answer #5 · answered by Malty 1 · 0 2

Symbiotic

2007-02-22 05:43:42 · answer #6 · answered by jet-set 7 · 0 1

Umh it's actually Symbiosis :

is a close association between two different types of organisms in a community. It can be defined as:

"The living together in permanent or prolonged close association of members of usually two different species, with beneficial or deleterious consequences for at least one of the parties."

There are several classes of symbiosis below. The symbols in brackets are intended to aid understanding, and are not formal definitions.

Mutualism, a relationship in which 'members of two different species benefit and neither suffers.'(+ +)
Commensalism, a relationship in which 'one party gains some benefit, whilst the other suffers no serious disadvantage'(+ 0)
Parasitism, in which one member of the association benefits while the other is harmed (+ -)
Amensalism, in which the association is disadvantageous to one member while the other is not affected (− 0)
Neutralism, in which both organisms are unaffected (0 0)
Competition, in which both organisms are harmed (- -)
Artificial symbiosis, the mutually beneficial integration between a live part and an artifact.
Symbiosis may be divided into two distinct categories: ectosymbiosis and endosymbiosis. In ectosymbiosis, the symbiont lives on the body surface of the host, including the inner surface of the digestive tract or the ducts of exocrine glands. In endosymbiosis, the symbiont lives within the tissues of the host; either in the intracellular space or extracellularly.

An example of mutual symbiosis is the relationship between clownfish of the genus Amphiprion (family, Pomacentridae) that dwell among the tentacles of tropical sea anemones. The territorial fish protects the anemone from anemone-eating fish, and in turn the stinging tentacles of the anemone protect the clownfish from its predators (a special mucus on the clownfish protects it from the stinging tentacles).


Some goby fish species live in symbiosis with a shrimp.Another example is the goby fish, which sometimes lives together with a shrimp. The shrimp digs and cleans up a burrow in the sand in which both the shrimp and the goby fish live. The shrimp is almost blind leaving it vulnerable to predators when above ground. In case of danger the goby fish touches the shrimp with its tail to warn it. When that happens both the shrimp and goby fish quickly retract into the burrow.

A famous land version of symbiosis is the relationship of the Egyptian Plover bird and the crocodile. In this relationship, the bird is well known for preying on parasites that feed on crocodiles and are potentially harmful to them. To that end, the crocodile openly invites the bird to hunt on his body, even going so far as to open the jaws to allow the bird to enter the mouth safely to hunt. For the bird's part, this relationship not only is a ready source of food, but a safe one considering that few predator species would dare strike at the bird at such proximity to its host.

One of the most spectacular examples of a symbiosis is between the siboglinid tube worms and symbiotic bacteria that live at hydrothermal vents and cold seeps. This is a mutualistic symbiosis where the worm completely loses its digestive tract and is solely reliant on their internal symbionts for nutrition. The bacteria oxidize either hydrogen sulfide or methane which the host supplies to them. These worms were discovered in the late 1970s at the hydrothermal vents near the Galapagos Islands and have since been found at deep-sea hydrothermal vents and cold seeps in all of the world's oceans.

2007-02-22 05:44:48 · answer #7 · answered by christinabambina 2 · 0 3

Symbiotic.

2007-02-22 11:32:41 · answer #8 · answered by JOHN D 2 · 0 1

Pugsley and David P are correct

2007-02-23 06:40:33 · answer #9 · answered by Serry's mum 5 · 0 0

Symbiosis!

2007-02-22 05:43:42 · answer #10 · answered by howardlee1977 4 · 0 1

Parasites recipotated, like the labour government

2007-02-22 05:50:22 · answer #11 · answered by john r 4 · 1 2

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