Due to conditions of desert
Long roots of desert plants penetrate deep in the soil in search of capillary water and absorb it for the plant's survival
Plants that survive with little rainfall in the Sahara Desert include acacia trees, palms, succulents, spiny shrubs, and grasses that have adapted to the arid conditions. These plants grow lower to the ground to prevent water loss by winds, store water in thick stems, and have long, horizontal roots that seek out water sources.
Sahara desert doesn't have much of the agriculture.This happens because the climatic conditions in Sahara doesn't support the growth for plants.Eventhough plants like cactus and date palm tree grow here.These plants have long roots to absorb water from the deep soil and they have spine like leaves or sometimes no leaves at all for preventing transpiration(loosing water)through leaves.
desert plants with long roots require less water.
yes, the desert plant have long roots to collect water. Some desert plants have shallow roots that form a dense web just below the surface of the soil to collect water even from light rainfalls.
yes a long time a go it was called the Sahara forest due to man's doing by cutting trees it turned into the Sahara desert
You are probably referring to the Sahara Desert.
Plants adapt to these harsh conditions in may ways, for instance:Longer roots to reach the waterSome have the ability to only live during times of less aridityThey all have thick external 'skin' to prevent the suns rays from with drawing too much water.They often have spikes (to stop predators from eating them.)
Many desert plants only sprout and or grow during and after a rainy season in the desert. The remainder of the year when water is scarce the plants are, basically, dormant. They shut down most of their systems waiting for better times. Some desert plants have long tap roots that they can use to tap into moisture hidden deep in the soil.
African elephants live in grassy climates of the Sahara desert Sahara desert is very hot and dry.
The precipitation is a catastrophic even in the desert. Very little rain comes by the desert and that is why the plants have long roots. That is also one of the adaptions of a plant in the desert, the long roots so that it can consume the very little water there is.Clarification:Lack of precipitation is not catastrophic in the desert, it is normal. Catastrophies occur when too much water falls in the desert, causing flash floods.