由於雨量不足(年雨量低於250mm以下)地區,因此生物種類稀少,沙漠中的植物發展出特殊的根、莖、葉構造儲水,有一些則發展出龐大的根系,吸收水份。沙漠中的動植物發展出一些特殊構造來適應環境,比如說針狀葉及莖上的蠟質都是為了減少水分的特殊構造膨大的莖則能儲存水分;駱駝的三層眼皮和捲曲的長睫毛及可閉合的鼻孔可以防止風沙吹入。駱駝最特別的地方是它的駝峰,但是駝峰不是用來儲藏水分,而是脂肪組織,在需要時可轉換成能量,駱駝的水份主要是儲藏在血液中。
仙人掌的針狀葉及膨大的莖
駱駝的眼皮及睫毛
駱駝的眼皮及睫毛
駱駝可自動閉合的鼻孔
駝峰主要是脂肪
圖片來源:
Desert. [Illustration]. Retrieved from Encyclopædia Britannica Image Quest.http://quest.eb.com/images/309_365611
Cactus. [Photograph]. Retrieved from Encyclopædia Britannica Image Quest.http://quest.eb.com/images/132_1211063
Illustration Of Camel Eye. Photograph.Encyclopædia Britannica Image Quest. Web. 18 四月 2012.http://quest.eb.com/images/118_832468
Eye Of A Domestic Bactrian Camel Altai˜Mongolia.[Photograph]. Retrieved from Encyclopædia Britannica Image Quest.http://quest.eb.com/images/116_1516953
Camel Nose. [Photograph]. Retrieved from Encyclopædia Britannica Image Quest.http://quest.eb.com/images/149_2024096
Camel . [Fine Art]. Retrieved from Encyclopædia Britannica Image Quest.http://quest.eb.com/images/108_254042
Desert. [Illustration]. Retrieved from Encyclopædia Britannica Image Quest.http://quest.eb.com/images/309_365611
Cactus. [Photograph]. Retrieved from Encyclopædia Britannica Image Quest.http://quest.eb.com/images/132_1211063
Illustration Of Camel Eye. Photograph.Encyclopædia Britannica Image Quest. Web. 18 四月 2012.http://quest.eb.com/images/118_832468
Eye Of A Domestic Bactrian Camel Altai˜Mongolia.[Photograph]. Retrieved from Encyclopædia Britannica Image Quest.http://quest.eb.com/images/116_1516953
Camel Nose. [Photograph]. Retrieved from Encyclopædia Britannica Image Quest.http://quest.eb.com/images/149_2024096
Camel . [Fine Art]. Retrieved from Encyclopædia Britannica Image Quest.http://quest.eb.com/images/108_254042
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