Name: John N.
Why do some fruits like kiwis and peaches and cactus fruit have hairs or needles?
I am not an evolutionary botanist, but I would suspect it is a deterrent to insects and other critters
who would want to make supper of the peach or cactus.
Adaptations/structures serving a variety of functions, usually protection and dispersal.
Anthony Brach, Ph.D
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Update: June 2012