Question

Predation and parasitism are which type of interactions

• A. +,+
• B. +,0
• C. -,-
• D. +,-

Answer 1

The correct option is D

+,-

Predation is when an organism kills another organism for food, and parasitism is an organism colonizing another organism and depending on it for food and shelter. In predation the predator benefits from the relation, while the prey is harmed and similarly in parasitism the parasite benefits from the relation while the host is harmed. Therefore both these relationships are a + and -