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植物器官: 根(Root)

植物器官: 根(Root)

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----------------------- cortex<br />

--------------------- endodermis<br />

----------------- pericycle<br />

---------------- phloem<br />

------------------- protoxylem<br />

------------ metaxylem<br />

Zea mays 玉 米 根 橫 切 面 ( 單 子 葉 ) root C.S. 600x

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