FFA Floriculture Practice Test

What is commonly found in floral preservatives that helps extend the life of cut flowers?

1. Nitrogen fixer

2. Chlorophyll enhancer

3. Acidifier

4. Rooting hormone

The correct answer is: Acidifier

Floral preservatives are designed to extend the life of cut flowers by providing the necessary nutrients and creating an optimal environment for the flowers. An acidifier is commonly included in floral preservatives because it helps to lower the pH of the water. A slightly acidic pH is beneficial for cut flowers as it enhances the flower’s ability to uptake water and nutrients, which is critical for maintaining freshness and longevity. While nitrogen fixers, chlorophyll enhancers, and rooting hormones serve important roles in plant biology, they are not relevant to the preservation of cut flowers. Nitrogen fixers are involved in enhancing soil fertility and do not directly influence the longevity of cut flowers. Chlorophyll enhancers are typically used in living plants to promote green foliage and are not needed for cut flowers that no longer photosynthesize effectively. Rooting hormones are used to stimulate root growth in plant cuttings, which does not apply to cut flowers, as they do not require rooting to survive. Therefore, the correct answer highlights the specific function of an acidifier in floral preservation.