How are the five major climate regions related to the three zones of latitude.

The three zones of latitude :
i) Tropics till 23º.45 (between ± 23º.45)
ii) Temperate zone between 23º.45 to 66º.55. in both Hemispheres
iii) Polar Caps between 66º.55 to 90º, in both Hemispheres.
There are six major climate regions :
1. Tropical rain forests
2. Tropical grasslands (Savannah)
3. Deserts - China climate (from West to East)
4. Mediterranean climate - Temperate grasslands (Steppes, Prairie, Pampa, Veld, Downs)
5. Temperate rain forests - Taiga (from West to East)
6. Polar Ice caps
The matching is ---
1,2 : i)
3,4,5 : ii)
6 : iii)