-Chemotaxis is the movement of cells or organisms in response to chemicals, whereby the cells are attracted (positive chemotaxis) or repelled (negative chemotaxis) by substances exhibiting chemical properties.
Flavonoids play a crucial role as signal molecules in promoting the formation of nodules by symbiotic bacteria commonly known as rhizobia. The roots of leguminous plants use positive chemotaxis to attract rhizobia. Flavonoids are the chemicals associated with attraction of Rhizobium bacteria.
Chemotaxis refers to the movement of a species in reaction to a chemical stimulus. Bacteria, somatic cells, and other single-cell or multicellular species mediate their movements on the basis of some kind of chemicals in their surroundings.
Positive chemotaxis takes place if the movement is towards a greater concentration of the chemical in question.
Decomposers, such as microbes and fungi, play an important role in the carbon cycle. They break down the remains of dead plants and animals and, in doing so, release carbon dioxide through respiration.
B) Meiosis-"a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell, as in the production of gametes and plant spores." taken from google