SYMBIOSIS - ANTIBIOSIS
Symbiosis means living together in
intimate association or even union, of two dissimilar organisms. A
common example are the lichens, which are really double plants, a
combination of a fungus and an alga living together, each deriving
benefit form the other.
Another example is the
yucca plant and the yucca moth. One cannot exist without the other.
Pollination is possible for the yucca only with the help of the moth.
The moth larvae, on the other hand, cannot survive without the food
provided by the flower, yet there always are enough seeds left so that
the plant can survive.
Antibiosis is the
opposite of symbiosis, as is antipathetic symbiosis. This means that the
association, as in parasitism, is disadvantageous or destructive to one
of the organisms - mistletoe as an example.