Insulin. Insulin is a hormone made by the beta cells in the pancreas. It is the key that opens the doors of cells and allows glucose to get into the cell. Each cell needs glucose to function. Carbohydrates in food are broken down into glucose which enters the blood stream.
The pericycle is a cylinder of parenchyma or sclerenchyma cells that lies just inside the endodermis and is the outer most part of the stele of plants.
Difference Between Apoplast and Symplast Transport. The uptake of water by plants is called water absorption. Water is absorbed from the soil mainly through root hairs. The absorbed water crosses a variety cells such as cortical cells, passage cells(endodermis), pericycle and xylem tubers to reach the leaves.