Question

Potassium deficiency in plants causes

• A. Decreased apical dominance
• B. Increased apical dominance
• C. Increased secondary growth
• D. Increased monopodial growth

Answer 1

Answer: (A)

Decreased apical dominance

Potassium does not form a stable structural part of any molecules inside plant cells, yet a large amount of this elements are required for proper growth and development of the plant. It acts as a coenzyme or activator for many enzymes. It is also involved in the formation of cell membranes and in opening and closing of stomata. Deficiency of potassium includes shorter internodes, loss of apical dominance, plastid disintegration, etc., due to lack of enzyme activators. Thus option A is the correct answer.