IB MYP Integrated Sciences e-Assessment : Nutrient cycle Exam Style Practice Questions - New Syllabus
Question (1 marks)
Fertilizers are used to improve plant nutrition. When the nutrients are balanced the plants look healthier and grow more quickly. Common nutrients used by plants are nitrogen (N), phosphorus (P) and potassium (K) compounds, and the symbols of these elements are used to describe the main nutrients they contain. NPK fertilizer contains nitrogen, phosphorus and potassium.
If a plant does not receive enough of one of the nutrients, it will not grow effectively. This is known as a nutrient deficiency. The images below give some examples of the effects of nutrient deficiency on plants.
Identify which deficiency each plant is suffering from.
Plant A
Plant B
Plant C
▶️Answer/Explanation
Ans:
Plant A:
Darker, dull green leaves
Purple stems
Smaller size compared to the healthy plant
Phosphorus Deficiency
Plant B:
Yellowing of older leaves
Growth appears slowed down
Leaves dropping off
Nitrogen Deficiency
Plant C:
Younger leaves show yellowing at the tips and edges
Dead or yellow patches are visible at the center of the leaves
Potassium Deficiency