Plant Nutrition: Macronutrients and Micronutrients Quiz

What is the primary role of nitrogen in plant growth?

• It helps in the development of fruits and flowers.

• It is crucial for the synthesis of chlorophyll.

• It strengthens the cell walls in plants.

• It aids in water regulation within the plant cells.

Why is phosphorus important for plants?

• It plays a vital role in energy transfer.

• It is essential for water uptake.

• It increases the plant's resistance to diseases.

• It is only necessary for leguminous plants.

Which of the following is a function of potassium in plants?

• Enhancing the flavor of fruits and vegetables.

• Regulating the opening and closing of stomata.

• Direct involvement in photosynthesis.

• Increasing the size of the plant cells.

Calcium is important for plant health because it:

• Acts as a secondary messenger in signal transduction pathways.

• Is a major component of plant DNA and RNA.

• Directly participates in the synthesis of amino acids.

• Enhances the absorption of other nutrients from the soil.

Magnesium's role in plant health includes:

• Acting as the central atom in the chlorophyll molecule.

• Enhancing the plant's ability to withstand drought.

• Stimulating the growth of plant roots.

• Increasing the plant's resistance to frost.

Iron in plants is essential for:

• Nitrogen fixation in leguminous plants.

• Chlorophyll synthesis, although it is not a component of chlorophyll.

• The synthesis of plant hormones.

• The regulation of water content in plant cells.

Zinc plays a crucial role in plants by:

• Acting as a cofactor for enzymes involved in protein synthesis.

• Enhancing the plant's ability to absorb water from the soil.

• Directly participating in the synthesis of chlorophyll.

• Increasing the plant's resistance to pests.

Copper is important in plants for:

• Its role in the synthesis of vitamin C.

• Acting as a cofactor for various enzymes involved in photosynthesis and respiration.

• Enhancing the structural strength of plant cell walls.

• Regulating the plant's uptake of water and nutrients from the soil.

Which of the following is NOT a role of nitrogen in plants?

• Enhancing the plant's ability to flower.

• Increasing the plant's resistance to disease.

• Direct involvement in the synthesis of DNA.

• Acting as a primary nutrient in root development.

Phosphorus deficiency in plants can lead to:

• Stunted growth and dark green leaves.

• Yellowing of leaves and weak stems.

• Delayed flowering and fruiting.

• Both A and C.