Question

A laboratory investigation examined the growth rate of fruit flies in culture jars over time. The fruit flies were grown in an artificial medium containing nutrients and moisture. They were enclosed in a culture jar of a defined size. Initially, there were ten fruit flies in the experiment. The population reached 75 over the course of four weeks. However, after eight weeks, the population size leveled off and then decreased. Survival of fruit fly larvae declined after eight weeks. Which hypotheses are supported by the information in this scenario? select all that apply?.

Answer 1

During the first four weeks of the experiment, food was plentiful and the fly population exceeded capacity. Drosophila could not survive in the laboratory environment. Capacity decreased when no new food was added to the culture vessel.

Drosophila is chosen because of its high growth rate and short life cycle.

The carrying capacity of Drosophila has allowed them to reproduce at ever faster rates due to the large amount of food source supplied to the flies and the ability to continue the cycle.

Drosophila can reach growth rate limits in their natural habitat and are unable to reach the same growth rate once they reach an artificial environment.

Less carrying capacity unless new lining is added culture vessel. Over time, as the food source added to the jar decreased, the flies stopped growing and decreased in number.

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