Fundamentals of Plant Nutrition MCQs Quiz 2

1. Which of the following best describes the term “essential nutrient”?

 Required only in trace amounts

 Indispensable for plant growth and reproduction

 Improves soil structure

 Enhances growth under stress conditions

2. Which of the following is NOT part of Arnon and Stout criteria?

 Deficiency prevents life cycle completion

 Cannot be replaced by another element

 Direct involvement in metabolism

 Essential for all plant species

3. If a plant lacks chlorophyll, it cannot _______.

 Grow

 Respire

 Absorb water

 Photosynthesize

4. Which of the following elements is considered beneficial but not essential for all plants?

 Potassium

 Phosphorus

 Nitrogen

 Silicon

5. Water in photosynthesis is primarily used for _______.

 Cooling leaves

 Transport

 Supporting structure

 Providing hydrogen and electrons

6. Which element is considered essential due to its role in amino acid synthesis?

 Carbon

 Nitrogen

 Calcium

 Magnesium

7. A nutrient directly involved in plant metabolism but not required for all species is classified as _______.

 Essential nutrient

 Beneficial nutrient

 Macronutrient

 Micronutrient

8. Soil pH primarily influences nutrient availability by affecting _______

 Nutrient solubility

 Root length

 Plant height

 Soil color

9. Sunlight is essential for photosynthesis because it provides _______

 Energy

 Oxygen

 Water

 Carbon dioxide

10. ____________ soil has the highest cation exchange capacity (CEC)

 Clay soil

 Sandy soil

 Loamy sand

 Gravel soil

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