Question

the scientists conduct a new experiment where they grow both spirodela polyrhiza and lemna gibba together in a petri dish with a limited amount of nitrogen. according to the competitive exclusion principle, which of the following graphs shows the most likely result of the experiment? choose 1 answer:

Explanation:

The competitive - exclusion principle states that two species competing for the same limited resource cannot co - exist at constant population values. One species will out - compete the other. In the graph, we should see one species' population increasing while the other's decreases or stabilizes at a lower level. Graph A shows Spirodela polyrhiza out - competing Lemna gibba over time as its population grows more rapidly and reaches a higher number of cells while Lemna gibba's growth is slower and levels off at a lower number.

Answer:

A. The graph where Spirodela polyrhiza's population (solid line) grows more rapidly and reaches a higher number of cells compared to Lemna gibba's population (dashed line) over time.