Evolution for ecology help with prompt?

Evolution for ecology help with prompt?

Postby darry » January 9th, 2014, 8:05 pm

Orchids are a type of flowering plant. How would biologists explain how a living orchid species lacking leaves evolved from an ancestral orchid species that had leaves?
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Evolution for ecology help with prompt?

Postby kam » January 9th, 2014, 8:09 pm

"A change in leaf morphology (usually reduced to a nonphotosynthetic scale), monopodial growth habit, and aeration complexes for gas exchange in photosynthetic roots seem to be the most important characters in making the evolutionary transition to leaflessness."

Molecular phylogenetics of Vandeae (Orchidaceae) and the evolution of leaflessness
http://www.amjbot.org/content/93/5/770.full
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