1) Under controlled laboratory conditions, you added two microbial species to th

Question

1) Under controlled laboratory conditions, you added two microbial species to the same nutrient solution. Within one week, only one microbial species remained. This observation relates to - Competitive Exclusion Carrying Capacity Resource Partitioning 2) Three related lizard species are members of a forest community in Norfolk. What enables these related lizard species to co-exist in this forest community? Mutualistic Partnership Resource Sharing Competitive Exclusion Resource Partitioning None of the above 3) The white stripe on the back of an otherwise black skunk is an example of- Misidentification Warning Coloration Mullerian Mimicry Batesian Mimicry Masquerade

Explanation / Answer

1) The competitive exclusion hypothesis states that the two organisms cannot coexist when they compete for the same limiting resource. Here, the two microbial species are added to the same nutrient solution. After one week only one species remained. So, this phenomenon is called as competitive exclusion.

Keystone species are the key members of any ecosystem. It plays a critical role in the functioning of an ecosystem. Carrying capacity is the maximum population size that can be reached in logistic growth. Dominant species hypothesis explains the interaction dynamics that exists among species resulting in the dominance of one species over other species.

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