The seven characteristics of living organisms, the classification system, the five kingdoms, vertebrate and arthropod groups, and dichotomous keys.
Characteristics of living organisms (MRS GREN)
All living organisms share seven characteristics: Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion and Nutrition.
Movement — an action causing a change of position or place.
Respiration — chemical reactions in cells that break down nutrient molecules to release energy.
Sensitivity — detecting and responding to changes in the environment.
Growth — a permanent increase in size and dry mass.
Reproduction — making more of the same kind of organism.
Excretion — removal of the waste products of metabolism and substances in excess.
Nutrition — taking in materials for energy, growth and development.
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