1) Hot Deserts are found a) in South America, North America and Europe b) in Africa and Europe c) in Asia, Australia, South America, North America and Africa. 2) Deserts are found between a) 20 and 30 degrees North of the Equator b) 0 and 10 degrees South of the equator c) 20 and 30 degrees North and South of the Equator d) On the Equator e) 10 and 15 degrees North of the Equator 3) A camel stores fat in its hump because a) to provide it with extra water when thirsty b) to store fat so that it can survive without eating for a long time 4) The biggest desert in the world is the a) Gobi desert in Asia b) Kalahari desert in Africa c) Sahara desert in Africa d) Patagonian desert in South America 5) The term used to describe the daily temperature range a) nocturnal b) external c) diurnal 6) The diurnal temperature range in the Sahara a) approximately 2 degrees b) less than 10 degrees c) 15 degrees d) exceeds 35 degrees 7) The reasons why there is a large diurnal temperature range a) There are cloudless skies that allow high amounts of insolation b) The sun heats the land rapidly c) There is rapid heat loss at night due to cloudless skies 8) The cactus: Choose three correct statements that show how it has adapted: a) stores water in its tissues b) has got spines to conserve water c) has got a narrow trunk to reduce evaporation d) has got a fat trunk to store excess water e) has a shallow root system. 9) Succulents a) are plants that store water in their tissues b) are very tall c) do not grow close to each other d) are soft and squishy 10) A plant that is adapted to high levels of salt in the soil a) Ivy b) Desert Holly c) does not grow in the deserts 11) A plant that is short living, growing quickly after heavy rainfall is called: a) Xerophyte b) Aformaral c) Ephemeral 12) A food chain in the desert : a) grasshopper-kangaroo rat- scorpion b) cactus-kangaroo rat - rattlesnake-hawk c) lizard-grasshopper-hawk-grass 13) Desert soils are... a) sandy, rocky with a low organic content b) sandy, shallow and fertile c) red clays 14) some desert soils are potentially very fertile because a) vegetation decays rapidly to create a rich humus b) important nutrients are not leached by heavy rainfall 15) TWO adaptations of an Acacia Tree a) thin trunks b) wide leaves c) short, wide trunks d) wide shallow root system e) roots that penetrate up to 50 metres 16) Examples of interdependence in the desert - select all that are TRUE a) vegetation roots stabilise the soil b) cacti provide food for kangaroo rats c) the soil provides nutrients for cacti 17) A Kangaroo Rat has adapted to the heat of the desert by a) urinating frequently b) using its tail as a fan c) hunting for food at night 18) An acacia tree has adapated to the heat of the desert by a) growing wide leaves b) having a fire resistant bark c) not growing very tall 19) Desert biodiversity a) Is far lower than most biomes b) is greater than the rainforests c) Is comparable to temperate forests 20) Deserts are found at latitudes where a) Warm air is rising and cooling b) Cool air is warming and rising c) Cool air is descending and warming

Hot Desert Ecosystems

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