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.
Vermiculite added to the garden or vermiculite in potting soil increase water and nutrient retention and aerates the soil, resulting in healthier, more robust plants. Perlite may also be found in potting soils, but vermiculite is far superior for water retention. Vermiculite mixed half and half with soil, peat or compost eliminates packed down soil in flower pots and houseplant containers while allowing excellent aeration, reducing watering frequency and allowing root spread. 2  To transplant using vermiculite, dig a hole that is 6 inches larger than the plants roots.