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Which prominent Southwest desert plant employs pleats along its stem as a mechanism to expand and contract, allowing it to absorb significant amounts of water when available?

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Answer Explanation

The Saguaro cactus (Carnegiea gigantea), iconic to the Sonoran Desert, has a pleated surface that works like an accordion, allowing the stem to expand greatly to store water after rain and contract as it uses its reserves.

A. Ocotillo

15%

B. Prickly Pear Cactus

48%

C. Saguaro Cactus

13%

D. Creosote Bush

24%

Which prominent Southwest desert plant employs pleats along its stem as a mechanism to expand and contract, allowing it to absorb significant amounts of water when available?

Answer Explanation

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