Macronutrient

Question 1

Carbon (C) CO2 from atmosphere Major component of biomolecules (proteins, starches, cellulose)

Answer 1

Hydrogen (H) Water (H2O) Component in biomolecules used in photosynthesis

Question 2

Oxygen (O) CO2 from atmosphere Used in cellular respiration during night time

Answer 2

Nitrogen (N) Absorbed from soil Base element in cells, proteins, hormones, chlorophyll

Question 3

Phosphorus (P) Absorbed from soil Essential for DNA, RNA, ATP production and energy transfer

Answer 3

Potassium (K) Absorbed from soil Regulates water uptake, enzyme activation, photosynthesis

Question 4

Calcium (Ca) Absorbed from soil Structural component in cell walls and enzyme activation

Answer 4

Sulfur (S) Absorbed from soil Essential for amino acid production and protein synthesis

Question 5

Magnesium (Mg) Absorbed from soil Component of chlorophyll and enzyme activation