Within biological communities, some species are important in determining the ability of a large number of other species to persist in the community. Such species are called

An orchid plant is growing on the branch of mango tree. How do you describe this interaction between the orchid and the mango tree?

Competition is best defined as a process in which the fitness of one species (measured in terms of its $' r '$ the intrinsic rate of increase) is significantly

Lower in presence of another superior species

In an association of two animal species, one is a termite which feeds on wood and the other is a protozoan Trichonympha present in the gut of the termite. What type of association they establish ?