What is the horizontal distribution of different species occupying levels on land or in water called?

The term 'Niche' denotes the _________ role played by an organism in its environment.

The highest level of ecological hierarchy in ecological organization is

Given below are two statements.

Statement I - Calotropis growing in abandoned fields is never consumed by cattle and goats.

Statement II - Calotropis produces highly poisonous cardiac glycosides.

In light of above statements, select the most appropriate answer from the option given below.