The Trapper - Jimmy's first day. The first of three short dramas set in the north-east of England in the 1840s about a young miner called Jimmy Turton. Jimmy introduces himself. He's eleven years old and he's about to start his first day working in the mine as a trapper. In the mine he'll be working alone in complete darkness, opening and closing trap doors to allow coal carts along the tunnel and to control the flow of air through the mine.
These cells help to support plants while not restraining growth due to their lack of secondary cell walls and the absence of a hardening agent in their primary cell walls. Sclerenchyma Cells Sclerenchyma cells also have a support function in plants, but unlike collenchyma cells, they have a hardening agent and are much more rigid.
Organelle Description Function Animal, Plant or Both CELL WALL Rigid, tough, made of cellulose Protects and supports the cell Plant CELL MEMBRANE Thin, covering, protects cells Protects the cell, performs active transport and passive transport, moves materials in and out of the cell, communication Both CYTOPLASM Jelly like substance that contains organelles Pads and supports organelles inside the cell.