**1.6 Inorganic Ions**

Question 1

Calcium ions (Ca2+)

Answer 1

• Used by plants to form calcium pectate for the middle lamella (layer that joins adjacent cells).

Question 2

Magnesium ions (Mg2+)

Answer 2

• Used by plants to form chlorophyll.

Question 3

Nitrate ions ((NO3)-)

Answer 3

• Used by plants to make DNA + amino acids.

Question 4

Phosphate ions ((PO4)3-)

Answer 4

• Used to make ADP + ATP and DNA + RNA.

Question 5

Where do inorganic ions occur?

Answer 5

• In solution in cytoplasm + bodily fluid of organisms.

Question 6

What are 4 ions required for plant growth + developement?

Answer 6

• Nitrate.
• Calcium.
• Phosphate.
• Magnesium.