N 间 Animal cell nucleus (b) Plant cell nucleus Figure 16-25 The Nucleus. The nucleus is a prominent structural secretory granules (SG) in the cytoplasm. (b) The nucleus(N)of a plant feature in most eukaryotic cells. (a) The nucleus IN of an animal cell. This cell. This is a cell from a soybean root nodule. The prominence af plastids s an insulin-producing cell from a rat pancreas: hence, the prominence of P)reflects their role in the storage of starch granules (TEMs)