Question

A student notices the presence of some growth on a Petri dish left on a lab counter. What inference can she make about the Petri dish shown above?

A) The Petri dish generated living cells from its chemical contents.
B) The Petri dish provided nutrients for cells that landed on the surface of the media.
C) The Petri dish created mutated versions of the cells that were already on its surface.
D) The Petri dish allowed for microscopic organisms to move into the dish while it was closed.

Answer 1

B. That is the answer.

Step-by-step explanation:

The Petri dish provided nutrients for cells that landed on the surface of the media. The fungal colonies that are shown growing on the Petri dish must have landed as spores on the surface of the dish while it was open. The nutrients and moisture would have allowed for these cultures to grow well.

Answer 2

B) The Petri dish provided nutrients for cells that landed on the surface of the media.

Step-by-step explanation:

It is possible for microorganisms to land on the petri dish and proliferate under favourable environment in the petri dish. It is highly unlikely for a cells to be formed from the chemicals on the petri dish. For option C, it would require that cells are already present on the petri dish in the first place.