What is the appearance of signs associated with Black Spot disease?

The signs associated with Black Spot disease prominently feature black lesions on the leaves of affected plants. This fungal disease typically manifests as small, dark spots that can lead to premature leaf drop and can significantly affect the overall health and vigor of the plant. The presence of these distinct black lesions is a clear indicator of the disease's progression and can be essential for identification and management.

In contrast, yellowing leaves are more indicative of nutrient deficiencies or other stress factors rather than Black Spot disease itself. White powdery growth is characteristic of powdery mildew, a different type of fungal infection. Stunted root growth could be associated with various issues, including root rot or other soil-related problems, but is not a symptom typically linked with Black Spot disease. Thus, the identification of black lesions specifically correlates directly with the symptoms of Black Spot, making it the correct answer.