Describe the process of transpiration and respiration in humans
Answers
The process of transpiration and respiration are vital functions in plants. Transpiration is the process through which plants lose water, and respiration is the way they acquire energy. During respiration, cells in plants and animals convert glucose (sugars) into a usable form of energy. This takes place in the mitochondria of the cells, of which each cell has 1,000 to 2,000. Respiration vs. breathing Respiration in plants is not the equivalent of respiration (breathing) by humans. Plant respiration involves breaking hydrogen out of sugar to capture the released energy and giving off carbon dioxide and water as byproducts. Transpiration In its simplest form, transpiration is the manner in which plants perspire--via water evaporation from stomata in their leaves. The temperature of the air and on the amount of light from the sun determines the rate of transpiration. Stomata Microscopic pores on the leaves of plants called stomata control the flow of gases (oxygen and carbon dioxide) as well as water, facilitating both photosynthesis and respiration. The majority of water loss (95 percent) occurs through the stomata in the process of transpiration. Guard cells In 2001, researchers at the University of California-San Diego discovered that each stomata is surrounded by specialized guard cells that can close the stomata to conserve water."