BAPS 2225 - Macronutrients for Plant

What is a key function of nitrogen in plant physiology?

• Formation of ATP
  

• Root development
  

• Activation of enzymes
  

• Structural integrity of cell walls

What role does potassium play in plant photosynthesis?

• Production of chlorophyll
  

• Stabilization of cell membranes
  

• Regulation of stomata opening and closing
  

• Formation of cell walls

Which enzyme is activated by potassium in plants?

• ATPase
  

• Amylase
  

• Nitrate reductase
  

• Phosphatase

What is the function of calcium in plant physiology?

• Regulating CO₂ uptake

• Stabilizing ribosome structures

• Activating RuBP carboxylase
  

• Bridging phosphate and carboxylate groups in membranes
  

What is the primary role of magnesium in plants?

• Nitrogen fixation

• Formation of amino acids

• Transport of water

• Formation of chlorophyll

Sulfur is crucial for the synthesis of which type of compounds in plants?

• Proteins

• Sugars

• Oils

• Carbohydrates

In the nitrogen cycle, what is the process of converting N₂ to NH₄⁺ called?

• Ammonification

• Nitrification

• Denitrification

• Nitrogen fixation

What form of sulfur is primarily absorbed by plants?

• Sulfide (S²⁻)

• Sulfate (SO42⁻)

• Sulfur dioxide (SO₂)

• Hydrogen sulfide (H₂S)

Which process in the nitrogen cycle involves converting organic nitrogen to ammonium?

• 
  Mineralization

• Denitrification

• Assimilation

• Fixation

What role does sulfur play in plant metabolism?

• Activation of enzymes
  

• Structural integrity of cell walls

• Formation of S-containing amino acids

• Regulating water transport