C4.1 THINGYS

Question 1

The mutualism between rhizobium and fabaceae

Answer 1

the plant:
- grows root nodules in which the bacteria can live with protection
- Maintains low oxygen conditions
-Supplies sugar

Rhizobium:
-Absorbs nitrogen and produces ammonium
- Makes sure the plant doesnt go into nitrogen deficiency

Question 2

The mutualism in mycorrhizae and orchidaceae

Answer 2

The orchid:
Supplies carbon compounds including sugars

the fungus:
-Absorbs nitrogen and phosphorus from the soil and supplies it to the orchid
- Supplies fixed carbon in organic compounds
-Supplies water

Question 3

Zooxanthallae in coral

Answer 3

The coral:
-Provides a safe and protected environment
-Grows close to the surface so the algae have a good source of light
-Supplies carbon dioxide

The algae:
- supplies carbon compounds such as glucose and amino acids
-Supplies oxygen produced by photosynthesis