What is a symptom of excess minerals in plant tissue?

Chlorosis and necrosis are indeed common symptoms associated with the presence of excess minerals in plant tissue. Chlorosis refers to the yellowing of leaves due to a lack of chlorophyll, which often occurs when certain nutrients, such as nitrogen or magnesium, are imbalanced. Meanwhile, necrosis involves the death of plant tissue, leading to brown, dead spots on leaves or other parts of the plant. These symptoms emerge because an excess of certain minerals can interfere with the plant's ability to absorb essential nutrients, causing toxicity or nutrient lockout.

On the other hand, rapid growth, healthy dark green foliage, and budding or flowering are generally indicative of good health and balanced nutrition in plants, not excess minerals. Rapid growth could be a result of optimal conditions rather than excess minerals, while dark green foliage typically signals adequate nutrient availability, particularly nitrogen. Budding and flowering are associated with proper hormonal balance and nutrients but are not symptoms of mineral excess. Thus, the correct choice highlights the detrimental effects that excess minerals can have on plants, reflecting the stress and toxicity those conditions can cause.