awefully awesome question

Asked by  | 14th Feb, 2009, 03:00: PM

Expert Answer:

Spine of Cactus and thorn of Bougainvillea are analogous structures. This is because their basic origin is different. Opuntia i.e. cactus spines are leaf modifications whereas thorns of Bougainvillea are stem modifications.

Answered by  | 19th Feb, 2009, 07:13: PM

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