I believe that Cell a is most likely in G1 phase. The G1 phase, or the gap 1 phase, is the first of four phases of the cell cycle that takes place in eukaryotic cell division. In this part of interphase, the cell synthesizes mRNA and proteins in preparation for subsequent steps leading to mitosis. The phase ends when the cell moves into the S phase of interphase.
A. Looks like the mesophyll of a leaf or a section of it B. Is the stem C. Is the surface of the leaf (I don’t really have any vocab so I can get an exact answer)