Fundamentals of Plant Nutrition MCQs Quiz 2

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

 Gravel soil

 Loamy sand

 Clay soil

 Sandy soil

2. Water in photosynthesis is primarily used for _______.

 Transport

 Cooling leaves

 Providing hydrogen and electrons

 Supporting structure

3. Soil pH primarily influences nutrient availability by affecting _______

 Plant height

 Soil color

 Root length

 Nutrient solubility

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

 Potassium

 Nitrogen

 Silicon

 Phosphorus

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

 Magnesium

 Carbon

 Nitrogen

 Calcium

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

 Beneficial nutrient

 Macronutrient

 Essential nutrient

 Micronutrient

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

 Required only in trace amounts

 Improves soil structure

 Indispensable for plant growth and reproduction

 Enhances growth under stress conditions

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

 Cannot be replaced by another element

 Deficiency prevents life cycle completion

 Direct involvement in metabolism

 Essential for all plant species

9. Sunlight is essential for photosynthesis because it provides _______

 Energy

 Oxygen

 Carbon dioxide

 Water

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

 Grow

 Absorb water

 Respire

 Photosynthesize

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