Chemotropism (Gr. Chemiya - Chemistry, Tropeos - Rotation)

Chemotropism (from the Greek words "chemistry" and "turning") is the ability of plants and other organisms to move in response to chemical signals. This is one of the forms of so-called “tropisms” - reactions of organisms to external stimuli that lead to a change in the direction of movement. Chemotropism occurs in response to chemicals that can attract or repel plants.

Chemotropism can be positive or negative. Positive chemotropism occurs when a plant moves towards a higher concentration of a chemical. For example, plant roots may grow towards a source of nutrients, such as mineral salts or organic matter. Negative chemotropism, on the other hand, occurs when the plant moves towards a lower concentration of a chemical.

Chemotropism is an important mechanism for plants as it allows them to find food sources and avoid dangerous chemicals. For example, plant roots can grow towards mineral salts, but avoid areas where the concentration of toxic substances is too high.

Chemotropism can also occur in some species of bacteria that move in response to chemical signals such as amino acids or sugars. This mechanism allows bacteria to find food sources and colonize new territories.

Chemotropism is a complex process that involves many physiological and biochemical mechanisms. Some of these mechanisms have been studied in detail by researchers in the fields of biology and biochemistry. However, many aspects of chemotropism still remain unknown and will be the subject of further research.

In conclusion, chemotropism is an important mechanism that allows organisms to find food sources and avoid dangerous chemicals. This process is complex and includes many mechanisms that are still the object of research by scientists in the field of biology and biochemistry.