We have a log home that was black with mold and to clean it we use a 50/50 mixture of bleach and washed it off. As it has dried this week, there are apparent streaks from the bleach running down the walls. The walls were kept wet and we started at the bottom.
Home Â» Hydrotropism. Definition. noun. Growth or movement response of a cell or an organism to moisture or water. Supplement. In general, tropism is an orienting response of an organism to a stimulus. It often involves the growth rather than the movement of an organism.
Unsourced material may be challenged and removed. (September 2012). Phycomyces, a fungus, exhibiting phototropism. A tropism (from Greek ÏÏÏÏÎ¿Ï, tropos, a turning) is a biological phenomenon, indicating growth or turning movement of a biological organism, usually a plant, in response to an environmental stimulus.ropisms are usually named for the stimulus involved (for example, a phototropism is a reaction to sunlight) and may be either positive (towards the stimulus) or negative (away from the stimulus).