Question

Annual rainfall in grassland falls in the range of
A. 40 to 100 cm
B. 50 to 90 cm
C. About 150 cm
D. More than 200 cm

Answer 1

Hint: The rainfall can be described as the amount of precipitation in the form of rain. The moisture or water vapour is delivered through atmospheric turbulence and convection upward into air masses where they form clouds. This water vapour is increasingly released by clouds as rain.

Complete answer: Grasslands are areas where grasses dominate the vegetation. However, along with varying amounts of legumes, such as clover, and other plants, sedge and rush can also be found. On all continents except Antarctica, grasslands occur naturally and are present in most of the Earth's ecoregions. In addition, grasslands are one of the largest biomes on earth and dominate the worldwide landscape. They occupy about 31-43 percent of the land area of the Earth. Various grassland types exist: natural grasslands, semi-natural grasslands, and agricultural grasslands. The height of the grass corresponds to the amount of precipitation it receives. Compared to deserts that receive less than 300 mm and tropical forests that receive more than 2,000 mm, grasslands receive around 500 to 950 mm of rain each year. Although temperatures in some grasslands are often high, the average temperatures are around -20 °C to 30 °C. There are dry and rainy seasons on tropical grasslands that stay warm all the time. Temperate grasslands have cold winters and, with some irrigation, mild summers. Therefore, option B is the correct answer.
So, option B is the correct answer.

Note: Every year, grasses die back to their roots and the soil covers the roots. A few trees can be found along the streams in this biome, but not many because of the lack of rainfall. Hot summers and cool winters have temperate grasslands. Moderate rainfall is seen there.