Strolling in the Sonoran Desert, you come upon a stately Saguaro cactus. The large central "trunks" of this cactus are covered with numerous smaller spines

The central stalks are modified _________ used for water storage and spines are modified ______ used for protection.
A) stems; leaves
B) leaves; leaves
C) petioles; leaf blades
D) leaf blades; trichomes
E) stems; fruits


Answer: A

Biology & Microbiology

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Which process occurs when a salamander regenerates a lost limb?

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