PLANT NUTRIENTS QUIZ

Which of the following is a macronutrient required by plants in the largest quantity?

• Phosphorus (P)

• Nitrogen (N)

• Zinc (Zn)

• Iron (Fe)

A plant with stunted growth, small leaves, and a general yellowing of the older leaves is most likely suffering from a deficiency of:

• Nitrogen (N)

• Calcium (Ca)

• Phosphorus (P)

• Potassium (K)

Which of the following is an example of a micronutrient?

• Sulphur (S)

• Calcium (Ca)

• Magnesium (Mg)

• Boron (B)

The primary role of potassium (K) in a plant is to:

• Serve as a main component of DNA and ATP.

• Regulate water movement and activate enzymes for growth.

• Provide structural support to cell walls.

• Form the central component of chlorophyll

Which of the following describes the symptom of chlorosis?

• The yellowing of plant leaves due to a lack of chlorophyll.

• The reddening of plant stems and leaves.

• The wilting of leaves due to a lack of water.

• The development of black spots on leaves.

A plant with deformed or hooked young leaves, and a failure of new buds to open is likely suffering from a deficiency of:

• Magnesium (Mg)

• Potassium (K)

• Calcium (Ca)

• Nitrogen (N)

Which of the following is a primary function of phosphorus (P) in plants?

• Regulation of the opening and closing of stomata.

• Essential for energy transfer (ATP) and root development.

• The central atom of the chlorophyll molecule.

• A key component of proteins and amino acids.

Which of the following groups contains only secondary macronutrients?

• Calcium, Magnesium, Sulphur

• Carbon, Hydrogen, Oxygen

• Nitrogen, Phosphorus, Potassium

• Boron, Manganese, Zinc

The symptom of interveinal chlorosis (yellowing between the leaf veins while the veins remain green) on older leaves is a classic sign of a deficiency of:

• Nitrogen (N)

• Iron (Fe)

• Sulphur (S)

• Magnesium (Mg)

What is the term for a nutrient that is essential for a plant's survival and growth but is only required in very small or trace amounts?

• Secondary macronutrient

• Primary macronutrient

• Micronutrient

• Non-mineral element