The antonym of “parasite”:

🧠 Explanation:

The antonym of “parasite” is “host”. A parasite is an organism that lives on or in another organism and benefits at the host’s expense. In contrast, a host is an organism that provides nourishment, shelter, or support to another organism without necessarily harming it. Understanding antonyms and biological relationships is important for vocabulary and general science sections in exams like PPSC. Recognizing terms like parasite–host, predator–prey, or symbiont–host helps candidates answer questions accurately and improves comprehension of ecological and biological concepts, which are commonly tested in multiple-choice questions.