Question

you have been studying population growth of a species of paramecium, a single - celled organism for 18 days. food was occasionally added to the test tube in which the paramecia were grown. paramecium caudatum growth according to the diagram, what is the carrying capacity of the test - tube environment as long as food is added? about 10 paramecia about 50 paramecia about 65 paramecia about 100 paramecia

Explanation:

The carrying - capacity is the maximum population size that an environment can sustain indefinitely. In a population - growth curve, it is represented by the plateau phase. Looking at the given graph of Paramecium caudatum growth, the population stabilizes around 65 paramecia per mL when food is added, indicating this is the carrying - capacity of the test - tube environment.

Answer:

about 65 paramecia