Fundamentals of Plant Nutrition MCQs Quiz 2

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

 Absorb water

 Respire

 Photosynthesize

 Grow

2. Water in photosynthesis is primarily used for _______.

 Supporting structure

 Providing hydrogen and electrons

 Transport

 Cooling leaves

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

 Deficiency prevents life cycle completion

 Direct involvement in metabolism

 Cannot be replaced by another element

 Essential for all plant species

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

 Beneficial nutrient

 Micronutrient

 Macronutrient

 Essential nutrient

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

 Sandy soil

 Clay soil

 Loamy sand

 Gravel soil

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

 Magnesium

 Nitrogen

 Carbon

 Calcium

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

 Phosphorus

 Silicon

 Nitrogen

 Potassium

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

 Indispensable for plant growth and reproduction

 Improves soil structure

 Required only in trace amounts

 Enhances growth under stress conditions

9. Soil pH primarily influences nutrient availability by affecting _______

 Plant height

 Nutrient solubility

 Soil color

 Root length

10. Sunlight is essential for photosynthesis because it provides _______

 Energy

 Water

 Oxygen

 Carbon dioxide

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