Fundamentals of Plant Nutrition MCQs Quiz 3

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

 Stomata

 Leaf surface

 Stem lenticels

 Root hair cells

2. The food produced during photosynthesis is mainly _______.

 Carbohydrate

 Fat

 Minerals

 Protein

3. Which condition distinguishes essential from beneficial nutrients?

 Beneficial nutrients are always toxic

 Essential nutrients cannot be substituted by another element

 Essential nutrients improve yield only

 Beneficial nutrients are required in large amounts

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

 Mobility

 Specificity

 Antagonism

 Synergism

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

 Sulfur

 Nitrogen

 Phosphorus

 Potassium

6. Plants are called producers because they _______

 Consume oxygen

 Release water

 Absorb minerals

 Produce food

7. Which process is opposite to photosynthesis?

 Digestion

 Absorption

 Respiration

 Transpiration

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

 5.5–7.0

 9.0–10.0

 7.5–9.0

 3.5–4.5

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

 Phosphorus

 Nitrogen

 Calcium

 Potassium

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

 Iron

 Potassium

 Calcium

 Sulfur

 Loading …

Question 1 of 10