Red Seal Agricultural Equipment Technician Practice Exam

What role does nitrogen play in plant growth?

1. It aids in flower development

2. It is an essential nutrient that promotes leafy growth and overall vigor

3. It is primarily used in seed formation

4. It improves root structure

The correct answer is: It is an essential nutrient that promotes leafy growth and overall vigor

Nitrogen is a crucial nutrient for plants, as it is a major component of amino acids, the building blocks of proteins, and nucleic acids, which are vital for DNA and RNA synthesis. Its primary role in plant growth involves promoting healthy, leafy growth and overall vigor. This nutrient is essential for chlorophyll production, which facilitates photosynthesis, allowing plants to convert sunlight into energy effectively. Adequate nitrogen levels lead to robust vegetative growth, characterized by lush, green foliage that is fundamental for the plant's health and productivity. While nitrogen does have roles in flower development, seed formation, and root structure, those effects are secondary to its primary function of supporting leaf and stem growth. A deficiency in nitrogen can lead to stunted growth and yellowing leaves, indicating its importance in maintaining overall plant health.