Question

The primary nutrients of plants are:

• A. N, P, K
• B. C, H, O
• C. Zn, B, Mo
• D. Fe, Ca, Mn

Answer 1

The correct option is B

C, H, O

The correct option B:

Explanation of the correct option:

1. Primary nutrients are nutrients that are required by plants for their growth and development.
2. Primary nutrients are essential for the structure and integrity of the plants.
3. Carbon (C), hydrogen (H), and oxygen (O) are three major primary nutrients.

Explanation of the incorrect options:

Option A:

1. Nitrogen (N), phosphorus (P), and potassium (K) are the nutrients that are required in large quantities by plants.
2. They are known as macronutrients.
3. They are required for plant growth and several metabolic processes.

Option C:

1. Zinc (Zn) is required for the activity of many enzymes.
2. Boron (B) is required for the functioning of the membrane, pollen germination, and cell differentiation.
3. Molybdenum (Mo) is responsible for nitrogen metabolism.

Option D:

1. Iron (Fe) is responsible for the activation of enzymes involved in respiration, photosynthesis, and nitrogen metabolism.
2. Manganese (Mn) is a micronutrient that is essential for photosynthesis.
3. Calcium (Ca) is essential for providing structure to the plant cell.

Final answer: The primary nutrients of plants are C, H, and O.