Picture of a root hair cell in the soil ^
There are 5 organelles found in a root hair cell. They are the: nucleus, cytoplasm, plasma membrane, cell wall and vacuole. The root hair cell has a large surface area but is a delicate structure which can live up to 2 to 3 weeks. New root hair cells are formed at the top of the root to enable root hair coverage to be same. Root hair cells varies in length and diameter, from 5 - 17 micrometers in diameter and from 80 to 1500 micrometers in length. The root hair cells enable water to be absorbed by the plant through a thin root-like structure protruding out of the cell.
The nucleus contains chromatin material, consisting of the DNA of the cell which is important inherited by the daughter cells. The cell wall is a strong surface, surrounding the plasma membrane, which protects the cell and give it its shape. It also prevents too much expansion when water enters the cell. The plasma membrane controls the movement of substance into and out of the cell and is used for cell identification. The vacuole helps in isolating materials that pose as a threat to the cell and also helps in exporting waste products from the cell. The cytoplasm consists of cytosol and the cellular organelles, except the nucleus. The cytosol is made up of water, salts and organic molecules and many enzymes that speed up reactions. It is important as it suspends the cell organelles within it.
Picture 1: http://www.bbc.co.uk/schools/ks3bitesize/science/images/plant_root_cell.gif
Picture 2: http://www.dr-sanderson.org/images/root%20hair%20cell.jpg
Information gathered from: http://www.blurtit.com/q777326.html ; http://wiki.answers.com/Q/What_is_the_function_of_a_cell_wall ; http://wiki.answers.com/Q/What_is_the_function_of_a_plasma_membrane ; http://en.wikipedia.org/wiki/Vacuole
Done by: Lim Hao Yang, Neo Wei Hong, Wen Yue, Elgin Patt and Sean Phua