Ans.
Ecological or biological interactions refer to the relationships that influence two organisms belonging to the same or different species within a community. Various forms of association are identified among different organisms.
An example is the relationship between barnacles and whales, where barnacles derive advantages from their connection, while the whale remains unharmed. Such relationships are categorized as commensalism. Therefore, option A). accurately corresponds with option 3). commensalism.
Another example is the interaction between storks and fish, illustrating a predator-prey dynamic, where the stork acts as the predator consuming small fish (its prey). In these interactions, one species benefits while the other suffers. Thus, option B). correctly aligns with option 1). prey-predator.
A tick that feeds on the blood of an animal exemplifies a type of symbiotic relationship known as parasitism. The tick (the parasite) resides within or on the host organism's body, gaining benefits at the expense of the host's wellbeing. Hence, option C). rightly corresponds with option 2). parasitism.