HORTICULTURE

Detailed explanation-1: -The seasons in hot and dry deserts are usually very hot during the summer and warm during the rest of the year. During winter these deserts get little rainfall. Rain is often light, or in short concentrated bursts. Most of the time evaporation rates are faster than rainfall rates.

Detailed explanation-2: -Deserts are arid ecosystems that receive fewer than 25 centimeters (10 inches) of precipitation a year. Death Valley, California, above, receives fewer than 5 centimeters (2 inches) of rainfall every year. However, Death Valley’s infrequent rain and extreme temperatures can impact the landscape.

Detailed explanation-3: -Cool-season precipitation is the most important and extensive source of rain in the desert region. Rainfall is widespread and of relatively long duration during the cool season.

Detailed explanation-4: -These plants are called xerophytes. Xerophytes tend to have small, waxy leaves, which help the plant to retain water. Some, such as cacti, can store water in their trunks. Cacti can be up to 20 metres tall and store more than 5 tonnes of water in their bodies.