According to Heather Scoville, in evolution expert, in her article, What is a Niche? “A niche is a word that is used in ecological biology to define an organism's role in an ecosystem.” This means the place an organism lives, the organism's "job" in that environment, what an organism eats, and how it interacts with other biological and non-living species. There must be a symbiotic relationship between all species. The three main niches an organism might contend with are commensalism, predation and mutualism. Ecology is about how the species of an ecosystem interact together, their interaction with their environment, and with each other.
Plants and animals interactions one must think about are mutual beneficial ones known as mutualism
Plants and animals interactions one must think about are mutual beneficial ones known as mutualism