Question 48

The interaction between humans and the organism causing malaria is best described as parasitism.

In the case of malaria, the Plasmodium parasite invades and lives within human hosts, utilizing their resources for survival and reproduction while causing harm to the host. This relationship exemplifies parasitism, where one organism benefits at the expense of the other.

A) Predation

Predation refers to a relationship where one organism (the predator) kills and consumes another organism (the prey). In the context of malaria, the Plasmodium parasite does not kill humans outright but rather resides within them, making predation an inaccurate description of their interaction.

B) Commensalism

Commensalism is a type of relationship where one organism benefits while the other is neither helped nor harmed. Given that malaria causes significant health issues for humans, this option does not accurately reflect the detrimental impact of Plasmodium on its human hosts.

C) Mutualism

Mutualism describes a relationship where both organisms benefit from each other. In the case of malaria, the relationship is harmful to humans, as the parasite causes disease, thereby disqualifying mutualism as an appropriate descriptor.

D) Parasitism

Parasitism accurately describes the interaction between humans and the Plasmodium parasite, as the parasite benefits from living in the human host while causing illness and suffering, which typifies the nature of parasitic relationships.

Conclusion

The relationship between humans and the organism causing malaria is definitively parasitic, as it involves the parasite benefiting at the expense of the human host's health. All other options fail to capture this dynamic, either misrepresenting the interaction or misunderstanding the implications of the relationship.