what is symbiotic relationship?

Answer 1

Ecolink nailed it. When I first learned about symbiotic relationships, the term mainly applied to the relationships that were positive for both species (with parasitic relationships being the converse). Nowadays, the term symbiotic relationships defines any ecological link between two species, and is broken into the 3 categories of mutualism, commensalism, and parasitism. It's amazing how much science curricula can change in a few years.
An important thing to note here though is that these species aren't engaging in these relationships to "help" the other species -- things just kind of evolve that way. If the other species benefits, so much the better, but this doesn't happen out of some altruistic streak on the part of the initiating species (say, the bee that pollinates a certain species of flowering plant)

Answer 2

A symbiotic relationship is a close relationship between members of different species. Symbiosis does not always benefit both species involved in the relationship. Three types:

mutualism: both species benefit
parasitism: one benefits and the other is harmed
commensalism: one benefits and the other is neither helped nor harmed

Answer 3

Symbiosis is a close ecological relationship between the individuals of two (or more) different species.

Sometimes a symbiotic relationship benefits both species, sometimes one species benefits at the other's expense, and in other cases neither species benefits.

Answer 4

It is a relationship in which two organisms help each other to achieve their individual roles. For instance: I help you with your math homework, you help me with my english homework, we are involved in a symbiotic relationship. The opposite of this would be a parasitic relationship in which one organism would help another organism, but would get nothing out of it in return. Well, of course excepting that warm mushy feeling you get when you do somthing for someone else. But then, I seriously doubt that say a dog feels warm and happy at the thought that he is harboring and feeding say, a roundworm, in his gut. I am just not seeing it. =)

Answer 5

Two organisms helping each other to survive.

eg: A bee gathers nectar from a flower to make honey & feed other bees, the flower is assisted by spreading pollenation to other flowers.

A small bird will eat the insects off the back of a rhino, helping the rhino rid itself of parasites.

And so on.

Have fun!

Answer 6

ecological relationship between 2 different species that live together in direct contact