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CBSE Class 10 Answered

Are spine of cactus and thorn of lemon plant homologous organs ?explain.
Asked by akankshyasahu | 06 Feb, 2010, 12:15: PM
answered-by-expert Expert Answer

Thorns and spines seen in plants are analogous structures. Both are pointed structures that are protective in function. However, thorn is modification of stem and spine is modified leaf. Hence they are analogous and not homologous.

Answered by | 09 Feb, 2010, 07:20: AM

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CBSE 10 - Biology
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