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.
Freebase (0.00 / 0 votes) Rate this definition: Phototropism. Phototropism is the growth of organisms in response to light. It is most often observed in plants, but can also occur in other organisms such as fungi. The cells on the plant that are farthest from the light have a chemical called auxin that reacts when phototropism occurs.