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.
Basic Plant and Flower Parts Basic Parts of a Plant: Bud - the undeveloped flower of a plant Flower - the reproductive structure in flowering plants where seeds are produced Fruit - the ripened ovary of a plant that contains the seeds; becomes fleshy or hard and dry after fertilization to protect the developing seeds Leaf - the light absorbing structure and food making factory of plants; site of photosynthesis Root - anchors the plant and absorbs water and nutrients from the soil Seed - the ripened ovule of a plant, containing the plant embryo, endosperm (stored food), and a protective seed coat