Mineral Nutrition — Prelims Questions

Which of the following elements is a component of the central ring structure of chlorophyll and is also involved in the activation of several enzymes?

A plant exhibits stunted growth, dark green leaves, and a purplish coloration on its older leaves. Which mineral deficiency is most likely responsible for these symptoms?

Which of the following processes in the nitrogen cycle is carried out by bacteria like *Nitrosomonas* and *Nitrobacter*?

Which of the following statements about mineral toxicity in plants is correct?

Which of the following elements is considered immobile in plants, meaning its deficiency symptoms would first appear in younger leaves?

Which of the following is NOT a criterion for essentiality of a mineral element in plants?