The permeability of the cell membrane is determined by which mineral element?

Sulfur,as an essential nutrient,significantly increases the growth and productivity of which type of crops?

Which of the following groups is correct for micronutrients in plants?

Mark the statements as true/false by choosing the correct option from the set $(I-IV)$ given below:
$I.$ Magnesium is a constituent of chlorophyll and helps to maintain the ribosome structure.
$II.$ Calcium is needed during the formation of mitotic spindle.
$III.$ Magnesium is essential for the photolysis of water.
$IV.$ Zinc helps in sugar translocation.

Which mineral element is essential for the maintenance of ribosomes?

What is the function of trace elements that occur in protoplasm?