Texas FFA Nursery Landscape Practice Exam

Which of the following is a common indicator of plant stress?

1. New leaf growth

2. Flowering

3. Wilting

4. Healthy foliage

The correct answer is: Wilting

Wilting is indeed a common indicator of plant stress. When a plant experiences stress, it often struggles to maintain adequate water levels. This can result from various factors such as drought, overwatering, disease, or environmental stressors. As a response to insufficient water, the plant may lose turgor pressure, leading to wilting, which is characterized by drooping or collapsing leaves and stems. This physical change signifies that the plant is not functioning optimally and is attempting to preserve resources. In contrast, new leaf growth and flowering are typically signs of a healthy, thriving plant rather than stress. Healthy foliage also indicates that a plant is in good condition, as vibrant leaves reflect the plant's ability to photosynthesize effectively. Therefore, while new growth, flowering, and lush foliage are all positive indicators of a plant’s health, wilting serves as a clear sign of distress needing attention.