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Images 1 of 165 - Cactus
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  Cactus
Description:
No plant can live entirely without water, but in very dry regions where water is scarce, some plants such as cacti are able to survive for a number of years between rainstorms. Cacti and succulents have adapted, so that they do not lose as much water from the pores on their leaf surface compared to other plants. Many cacti only open their pores at night, when the air is cool and less water can evaporate.
1 of 14 pages
Cactus
Cell
Egg cell
Body systems
Digestive system
Body systems 2
Reproductive system
Skull
Long bone
Ball and socket
Elliposoidal joint
Hinge joint