What is a symbiotic relationship in which one species benefits and the other is harmed is known as?

A symbiotic relationship in which one species benefits and the other is harmed is known as Parasitism. In this interaction, the parasite benefits by obtaining nutrients or shelter from the host, while the host suffers negative consequences. These consequences can range from minor irritation to significant health problems or even death. The parasite benefits by exploiting the host and may live on or inside the host's body. Examples include tapeworms in animals, fleas on dogs, and certain types of fungi on plants. The defining feature of Parasitism is the clear benefit to one species and the harm to the other.