Which of the following is a structural component of vitamins like biotin and thiamine?

In calcium-deficient plants,meristematic regions of the stem and root tips are greatly affected,and chlorosis of the margins of young leaves takes place. These symptoms eventually lead to the death of leaf,stem,and root apices. These observations are related to the role of calcium in plant growth as it is:

Which enzyme is activated by zinc?

Explain the importance of the $Cl^-$ ion as an anion in plants.

Which nutrient is required in plants to increase resistance against pests as well as to tolerate salinity and drought?

Which mineral element is associated with the translocation of sugars in plants?