The sum total of all the roles an organism plays in a habitat is referred to as its? by Sunday | Apr 27 | Biology NECO | 0 comments A. ecology B. ecosystem C. habit D. habitat E. niche Correct Answer: Option E – niche Users Also Read These:Special modification which enables an organism to…The number of times an organism occurs within a…The activity of an organism which affects the…The sum total of adaptive changes from pre-existing…In a particular habitat, the role of an organism is…