In which population interactions both the species benefit?

Answer: Mutualism (पारस्परिकता) — both species benefit. Definition: Mutualism is a biological interaction in which both species involved obtain benefits from the relationship. (पारस्परिकता: दोनों प्रजातियों को लाभ मिलता है।) Bees and flowering plants — bees get nectar; plants get pollination. (मधुमक्खियाँ और फूल)