Name the cell type based on the provided characteristics: Cells possess unevenly thickened cell walls _____ Cells are alive at functional maturity and perform varied functions, including storage _____ The light dependent reactions take place in _____, and the Calvin Cycle takes place in the _____. Solution 1. Collenchyma: Collenchyma cells have unevenly thickened primary walls composed of cellulose; provide support to parts of the plants that are still growing. 2. Parenchyma: Parenchyma cells perform most of the metabolic functions of the plants, synthesizing and storing organic products. They are thin walled and living. 3. Thylakoid membrane 4. Stroma of cholorplast.