What are spines??Why are spines modify to ??☺️☺️☺️☺️❣️❣️✌️✌️✌️✌️❣️
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Spines are also modified leaves. In cacti, spines are wholly transformed leaves that protect the plant from herbivores, radiate heat from the stem during the day, and collect and drip condensed water vapour during the cooler night.
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Spines of the ocotillo (Fouquieria splendens). (Top) The leaves begin to transform into spines. (Bottom) The blades fall off and the hardened petioles become spines. Clusters of leaves also develop at the axil of each spine.
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