Question

which principle states that two species in the same habitat cannot have the same niche?
○ niche exclusion principle
○ competitive exclusion principle
○ habitat exclusion principle
○ population exclusion principle

Explanation:

The competitive exclusion principle (also known as Gause's principle) states that two species competing for the same limiting resources (i.e., having the same niche) in the same habitat cannot coexist at constant population values. The other options are not valid principles for this concept: "niche exclusion principle" is not a recognized term, "habitat exclusion principle" is incorrect as it's about niche, not habitat exclusion, and "population exclusion principle" is not a relevant ecological principle.

Answer:

B. competitive exclusion principle