Final Answer:
Spontaneous generation is the hypothesis that nonliving material can spontaneously change into a living organism.The control used in this experiment adequate both the sealed jar and the jar with mesh were controls for the open jar.Thus the option d) Yes, both the sealed jar and the jar with mesh were controls for the open jar is correct.
Step-by-step explanation:
The experimental design in this case involves testing the hypothesis of spontaneous generation by comparing the outcomes in three different conditions: open jar, sealed jar, and jar with mesh. The open jar serves as the experimental group, where exposure to external factors is unrestricted, while the sealed jar and jar with mesh act as controls.
The sealed jar isolates the contents from external factors entirely, while the jar with mesh allows air exchange but prevents larger organisms from entering. Both controlled conditions aim to provide a basis for comparison against the open jar's potential spontaneous generation.
In scientific experiments, a control group is essential to isolate and measure the effects of the independent variable. In this case, the open jar is the variable group where spontaneous generation is hypothesized to occur.
The sealed jar and jar with mesh serve as controls by maintaining specific conditions to evaluate whether observed changes in the open jar are indeed due to spontaneous generation or external factors. Therefore, the experiment's design includes appropriate controls to assess the validity of the hypothesis and draw meaningful conclusions about spontaneous generation.
Thus the option d) Yes, both the sealed jar and the jar with mesh were controls for the open jar is correct.