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Why do cactus's have spikes?

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Will Pringle

Lvl 1
5y ago
Updated: 7/27/2021

There are several answers, depending on the spikes. Answers include:

  • To protect the plant from herbivores
  • To provide a layer of still air, to protect the cactus skin from excessive heat
  • To provide shade to the cactus skin

Overall, the purpose seems to be related in some way to the plant's survival strategies.

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Blaze Rogahn

Lvl 10
4y ago

What else can I help you with?