Phytogeographical division of the Earth's surface

Regional phytogeography deals with the study of:
1. flora of the different phytogeographical areas.
2. phytogeographical areas.
3. flora.
The vegetation of the Earth is divided
1. horizontally and vertically.
2. flora areas and vegetation zones
3. different vegetation zones.
The belt of tropical rainforests is characterized by:
1. balanced climate.
2. large differences between night and day temperatures.
3. minimal rainfalls.
Steppes are typical of:
1. Ukraine.
2. Southern Europe.
3. South Asia.
In North America the steppe is called.
1. prairie.
2. pampa.
3. savannah.
The growing season in tundra lasts:
1. 1-3 months.
2. 2 months.
3. 6 weeks
The precipitation in tundra is:
1. quite sufficient.
2. totally inadequate.
3. there is no precipitation.
The main vegetation zones are not connected with:
1. the belt of deciduous conifers.
2. the belt of tropical rain forests.
3. the belt of tropical and deciduous forests.
The belt of deciduous broad-leaved forests can be found mainly:
1. in the temperate zone of the northern hemisphere.
2. n temperate regions of the southern hemisphere.
3. in areas with permanent climate.
For tundra vegetation is typical:
1. a growth of perennial plants, various kinds of mosses and lichens.
2. a growth of perennial herbs, various kinds of mosses and lichens.
3. a growth of forests, various kinds of mosses and lichens.