Which item contains nitrogen and is commonly used to feed plants?

Which item contains nitrogen and is commonly used to feed plants?

• A. Fertilizer; plant food
• B. Water; plant food
• C. Gasoline; plant food
• D. Salt; plant food

Answer: (A)

Plants need nitrogen to build proteins and chlorophyll, which are essential for growth and photosynthesis. Fertilizers are designed to supply this key nutrient to the soil or directly to the plant, and products labeled as plant food often list nitrogen as a primary component because it strongly boosts leafy growth and overall vigor. Water hydrates and helps move nutrients, but it doesn’t provide nitrogen in a usable nutrient form. Gasoline is toxic to plants and does not supply usable nitrogen. Salt affects plant cells through osmotic stress and salt toxicity, not by delivering nitrogen for growth. So the item that contains nitrogen and is used to feed plants is fertilizer, i.e., plant food.

Plants need nitrogen to build proteins and chlorophyll, which are essential for growth and photosynthesis. Fertilizers are designed to supply this key nutrient to the soil or directly to the plant, and products labeled as plant food often list nitrogen as a primary component because it strongly boosts leafy growth and overall vigor. Water hydrates and helps move nutrients, but it doesn’t provide nitrogen in a usable nutrient form. Gasoline is toxic to plants and does not supply usable nitrogen. Salt affects plant cells through osmotic stress and salt toxicity, not by delivering nitrogen for growth. So the item that contains nitrogen and is used to feed plants is fertilizer, i.e., plant food.