Which group of elements is not essential for a normal plant?
Which group of elements is not essential for a normal plant?
The correct option is C Lead, nickel, iodine, sodium
Lead, nickel, iodine and sodium are the group of elements that are not essential for a normal plant.
Potassium - Potassium helps to maintain an anion-cation balance in cells and is involved in protein synthesis, opening and closing of stomata, activation of enzymes and in the maintenance of the turgidity of cells.
Calcium - During cell division it is used in the synthesis of cell wall, particularly as calcium pectate in the middle lamella.
Magnesium - It activates the enzymes of respiration, photosynthesis and are involved in the synthesis of DNA and RNA.
Iron - It is an important constituent of proteins involved in the transfer of electrons like ferredoxin and cytochromes.
Zinc - It activates various enzymes, especially carboxylases. It is also needed in the synthesis of auxin.
Manganese - It activates many enzymes involved in photosynthesis, respiration and nitrogen metabolism.
Boron - Boron is required for uptake and utilisation of Ca2+, membrane functioning, pollen germination.
Molybdenum - It is a component of several enzymes, including nitrogenase and nitrate reductase both of which participate in nitrogen metabolism.
Lead, nickel, iodine and sodium are the group of elements that are not essential for a normal plant.
Potassium - Potassium helps to maintain an anion-cation balance in cells and is involved in protein synthesis, opening and closing of stomata, activation of enzymes and in the maintenance of the turgidity of cells.
Calcium - During cell division it is used in the synthesis of cell wall, particularly as calcium pectate in the middle lamella.
Magnesium - It activates the enzymes of respiration, photosynthesis and are involved in the synthesis of DNA and RNA.
Iron - It is an important constituent of proteins involved in the transfer of electrons like ferredoxin and cytochromes.
Zinc - It activates various enzymes, especially carboxylases. It is also needed in the synthesis of auxin.
Manganese - It activates many enzymes involved in photosynthesis, respiration and nitrogen metabolism.
Boron - Boron is required for uptake and utilisation of Ca2+, membrane functioning, pollen germination.
Molybdenum - It is a component of several enzymes, including nitrogenase and nitrate reductase both of which participate in nitrogen metabolism.
