Question

Essential elements like Nitrogen, Phosphorus, Potassium are supplied to plants growing in soil through:

• A. Irrigation
• B. Root exudates
• C. Fertilizers
• D. Atmospheric deposition

Hint:

Using balanced fertilizers can prevent nutrient imbalances and promote healthier plant growth by supplying all essential nutrients in appropriate proportions.

Answer 1

The Correct Option is C

Step 1: Understanding nutrient sources.
While irrigation and atmospheric deposition can provide some nutrients, they primarily supply water and trace elements. Root exudates mainly involve organic compounds affecting nutrient availability but not supplying the major elements directly. 
Step 2: Role of fertilizers.
Fertilizers are specifically formulated to provide plants with essential nutrients such as Nitrogen (N), Phosphorus (P), and Potassium (K). These macronutrients are vital for various physiological activities in plants including growth, root development, and photosynthesis.

Answer 2

To solve the problem, we need to identify how essential elements like Nitrogen, Phosphorus, and Potassium are supplied to plants growing in the soil.

1. Understanding the Question:
Essential elements like nitrogen, phosphorus, and potassium are necessary for plant growth, and they are supplied through various means. We are asked to identify the method through which these elements are supplied to plants.

2. Analyzing the Options:
(A) Irrigation: Irrigation refers to the supply of water to plants, but it does not directly supply essential elements like nitrogen, phosphorus, or potassium.
(B) Root exudates: Root exudates are substances released by plant roots into the soil, but they do not directly supply essential elements like nitrogen, phosphorus, or potassium.
(C) Fertilizers: Fertilizers are substances that contain essential elements such as nitrogen, phosphorus, and potassium and are directly supplied to plants to promote growth.
(D) Atmospheric deposition: This refers to the process where elements from the atmosphere, like nitrogen, may be deposited into the soil, but it is not the primary method for supplying these nutrients to plants.

3. Identifying the Correct Answer:
The correct answer is fertilizers, as they are specifically designed to supply essential nutrients like nitrogen, phosphorus, and potassium to plants.

Final Answer:
The correct answer is Option C: Fertilizers.