Question

Match column-I with column II and choose the correct option.

Column-I	Column-II
A. Predation	I. Cuscuta and Hedge plants
B. Commensalism	II. Balanus and Chthamalus
C. Parasitism	III. Cactus and Moth
D. Competition	IV. Orchid and mango

A. A-III, B-IV, C-I, D-II
B. A-IV, B-III, C-II, D-I
C. A-I, B-III, C-II, D-IV
D. A-III, B-IV, C-II, D-I

Answer 1

Hint: Cactus and moth shares predation type of interaction in which predator preys on another species. The interaction between orchid and mango is a commensal type in which one gets benefits while the other neither gets harmed nor gained. In parasitism, one gets a benefit at the cost of the other while in competition species compete for resources.

Complete step-by-step answer:

When one species, called a predator, preys on another species, this interaction is called predation. Aside from transferring energy, these predators hold the prey population under control. Predation assists in the transmission of energy from one level of the hierarchy to the next. Here, the interaction type between cactus and moth is predation.
Commensalism is defined as a biological interaction (symbiosis) in which members of one species benefit while members of the other species are neither harmed nor gained. So, the orchid and mango have commensal interaction.
Parasitism is a relationship between two living organisms in which one organism benefits at the cost of the other. The parasite is the beneficial organism, whereas the host is the harmed organism. Thus, Cuscuta and hedge plants are this parasitism type of interaction.
Biological interaction between two or more organisms of a similar or different species in which the species compete for different resources is referred to as competition. Balanus and Chthamalus compete with each other for different resources.

Hence, option A is correct.

Note: We need to note that competition is not only an interaction in which similar or different species compete with each other but also a process in which the fitness and survival ability of one species is lower than that of another species.