Fundamentals of Plant Nutrition MCQs Quiz 3

1. Which nutrient is universally essential due to its role in ATP formation?

 Nitrogen

 Potassium

 Calcium

 Phosphorus

2. Which soil pH range generally provides maximum nutrient availability?

 5.5–7.0

 7.5–9.0

 9.0–10.0

 3.5–4.5

3. The inability of one element to replace another in plant metabolism indicates _______

 Synergism

 Antagonism

 Specificity

 Mobility

4. Which process is opposite to photosynthesis?

 Digestion

 Absorption

 Respiration

 Transpiration

5. The food produced during photosynthesis is mainly _______.

 Carbohydrate

 Protein

 Minerals

 Fat

6. Plants are called producers because they _______

 Consume oxygen

 Absorb minerals

 Release water

 Produce food

7. Which condition distinguishes essential from beneficial nutrients?

 Essential nutrients cannot be substituted by another element

 Beneficial nutrients are required in large amounts

 Essential nutrients improve yield only

 Beneficial nutrients are always toxic

8. Which of the following is classified as a micronutrient (trace element) in plant nutrition?

 Sulfur

 Iron

 Calcium

 Potassium

9. Plants absorb most of their water and dissolved minerals through _____________

 Leaf surface

 Stomata

 Root hair cells

 Stem lenticels

10. Which macronutrient is primarily responsible for root development and energy transfer (ATP) in plants?

 Phosphorus

 Nitrogen

 Sulfur

 Potassium

 Loading …

Question 1 of 10