Question

Symbiotic relationship is called as
A) Some organisms live together
B) Share shelter and nutrients
C) Both A and B
D) None of the above

Answer 1

Symbiosis is a beneficial or positive interspecies interaction in which both the interacting species favor the growth and survival of each other so that both of them are benefited.

Complete answer:
Symbiotic association is the relationship between two organisms in such a way that they help each other and are mutually dependent on each other for their survival. The organisms that show such relationships are called the symbionts.
Lichens are the best examples of symbiotic associations. These are the complex organisms consisting of algae and fungi growing together in symbiosis.
The algae partner in the lichen prepares the food and the fungi absorb the water and mineral salts and offer protection to the algae. These are found as a thin, greenish patch on the tree trunks or walls.

On the basis of the nature of the association between organisms, symbiosis is of two types:
Proto-cooperation- It is the type of association in which both the organisms are mutually beneficial to each other and help each other in their growth but can live separately also. So this type of relationship is facultative or optional.
Mutualism- It is the type of association in which both the organisms are mutually beneficial to each other and help each other in their growth and their association is obligatory. So it is a functional association.

Hence the correct answer is option ‘C’.

Note: In a community members of different populations show interspecific interactions and these interactions determine the nature of the relationship between these species within the community.