What would be the purpose of incubating unopened plates alon

What would be the purpose of incubating unopened plates, along with your What is the appropriate term/description for these plates? If growth appears on an unopened plate, what could be a likely explanation? How might this affect the reliability of your results? What exposure did you choose for your plate and why?

Solution

1Ans The purpose of incubating the unopened plates is to be used as negative control--nothing should grow on these plates. The appropriate term is control or UNINOCULATED PLATE

2 Ans There could for two reasons.
Onboth -- The first is that most likely occured from contamination it would imply that the agar was contaminated when it was poured or when the media was made

on just one--most likely contaminated while making or using