1 a mutation occurring in a somatic cell, resulting in a change in the morphology or some other aspect of one part of an organism (usually a plant). 2  It may be maintained by vegetative propagation but not by sexual reproduction.oun. 1  a mutation occurring in a somatic cell, resulting in a change in the morphology or some other aspect of one part of an organism (usually a plant). 2  It may be maintained by vegetative propagation but not by sexual reproduction.
Although oxidation reactions are commonly associated with the formation of oxides from oxygen molecules, oxygen is not necessarily included in such reactions, as other chemical species can serve the same function. The reaction can occur relatively slowly, as in the case of rust, or more quickly, as in the case of fire.
Answers. Best Answer: Look at the oxidation numbers Mg is 0 because it's an element not reacted with anything else Cl2 is 0 for the same reason. Mg+2 is +2 because the overall oxidation number of an ion is it's charge Cl-is -1 (I'm going to assume you forgot to include the-on the Cl).