What is typically the result of chlorosis in plants?

Chlorosis is a condition in plants characterized by the yellowing of leaves due to insufficient chlorophyll. This deficiency can arise from various factors, including nutrient deficiencies (especially nitrogen, iron, or magnesium), poor drainage, or root damage. When the chlorophyll levels drop, the green pigment in the leaves is reduced, leading to the visible yellowing. This change impairs the plant's ability to photosynthesize effectively, which can eventually affect its overall health and growth.

In the context of the other options, healthy green foliage would indicate that the plant is thriving and not experiencing chlorosis. Stunted growth may occur as a secondary effect of chlorosis due to reduced photosynthetic capacity, but it is not a direct result of the condition itself. An increase in flowering typically signifies good health and nutrient availability, which contrasts with the implications of chlorosis. Therefore, the yellowing of leaves is the primary and most recognizable symptom that defines chlorosis in plants.