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.
In plants that reproduce by flowering (angiosperms), the pistil is the female reproductive portion (the gynoecium) of the flower.he term carpel is a more specific way of denoting one unit of a pistil, while the term pistil is a less exact way of describing the same part of the flower as the carpel, the ovule producing area. The base of the pistil is called the ovary.