The elements arsenic,copper,and mercury have which of the following effects?

Deficiency of micronutrients not only affects plant growth but also disrupts their specific functions,such as photosynthesis and mitochondrial electron transport. Which of the following groups of three minerals is involved in photosynthesis and mitochondrial electron transport?

Which mineral element is essential for the repair of worn-out cells?

In the life cycle of a plant,boron is essential for which of the following processes?

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 one of the following is not a micronutrient?