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.
Thank you... In plants xylem and phloem are the complex tissues which are the components parts of conductive system. In higher plants xylem contains tracheids, vessels (tracheae), xylem fibres(wood fibres) and xylem parenchyma (wood parenchyma).Tracheids These are elongated narrow tube like cells with hard thick and lignified walls with large cell cavity.hank you... In plants xylem and phloem are the complex tissues which are the components parts of conductive system. In higher plants xylem contains tracheids, vessels (tracheae), xylem fibres(wood fibres) and xylem parenchyma (wood parenchyma).