WAEC Biology 2023 Theory — Question 2

Model answer

Iron — Function: necessary for the synthesis of chlorophyll/protein. Deficiency effect: chlorosis/yellowing of leaves/poor growth. Molybdenum — Function: converts nitrogen to amino acids. Deficiency effect: stunted growth/pale leaves. Potassium — Function: protein synthesis/formation of cell membrane/crop margin turns yellow/brown; maturation/activates respiration/photosynthesis. Deficiency effect: premature death of plant leaf. Copper — Function: activates enzymes for respiration/carbohydrate metabolism/photosynthesis. Deficiency effect: pale/wilted/spotted leaves. Nitrogen — Function: necessary for the formation of Chlorophyll/amino acids/protein. Deficiency effect: poor/stunted growth/yellowing of leaves/poor flower formation.