Texas FFA Nursery Landscape Practice Exam

Which of the following elements is crucial for fruit development in plants?

1. A. Nitrogen

2. B. Phosphorus

3. C. Potassium

4. D. Calcium

The correct answer is: B. Phosphorus

Phosphorus plays a vital role in fruit development due to its critical function in energy transfer, storage, and the synthesis of ATP (adenosine triphosphate), which is essential for many biochemical processes within the plant. It is a key component of DNA and RNA, making it important for cell division and growth, as well as for the development of flowers and subsequent fruit. Additionally, phosphorus influences root development, which is crucial for efficient nutrient and water uptake, ultimately supporting healthy fruit production. A well-developed root system helps ensure that the plant can access the resources it needs during the flowering and fruit-setting phases. While other elements like nitrogen, potassium, and calcium also contribute to overall plant health and can affect fruiting indirectly, phosphorus is specifically tied to the processes that drive fruit maturation and development, making it a crucial element in this context.