Senin, 04 Juni 2012

plant physiology event : protoplasm


Component of cell walls are composed of protoplasm, the cell membrane, cytoplasm, Chloroplasts, Plasmodesmata, nucleus, Golgi body, the central vacuole. While the process of formation of ions and water molecules start moving in and out of all the body cells of plants from the soil into the plant through the root epidermis, penetrate the root cortex, into the stele and xylem vessels up to. On the way to the central cylinder, water will move freely in the space between cells.
While that's the case of ions and molecules in the cell is doing passive transport is the movement of molecules or ions without the use of cellular energy. Then the active transport is the movement of molecules or ions using the energy of that cell. Transfer is done by two mechanisms, namely diffusion and osmosis. Reproduction, development and specialization of the network form a multicellular organism in a way that the cell cycle there are two major phases, namely Interphase and Mitosis phase. Network started from seed plants consisting of dormant embryo, food storage, and protective. time to grow, the water content of seeds will be reduced drastically. Is the result of fertilization the embryo develops to form buds and apical meristem and root apical meristem.
Plant cell interacts with its environment cell behavior is not only influenced by the cell itself but also the surrounding cells and the plant itself and the outside environment. A wide range of substances such as food, minerals, water and gas to move from cell to cell in the form of molecules or particles. Environment of a cell includes the surrounding cells and the external environment, including water, soil and air where these plants grow and live. Water into the roots, moving from cell to cell and leave the body in the form of steam, all through the process of diffusion. Gases (O2 and CO2), the elements and ingredients of food into the cells or between cells and move from cell to cell by diffusion. Plant cells may experience a loss of water, when the water potential outside the cell is lower than the water potential in the cell.

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