Species Interactions Questions

Study the four statements ($\text{a-d}$) and select the two correct ones:(a) A lion eating a deer and a sparrow feeding on grain are ecologically similar in being consumers.(b) Predator star fish Pisaster helps in maintaining species diversity of some invertebrates.(c) Predators ultimately lead to the extinction of prey species.(d) Production of chemicals such as nicotine by plants are metabolic disorders.