The cells of the bundle sheath that surround the vascular tissues are large and contain specialized elongated chloroplasts that do not contain grana, but form starch grains.
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释义
它的特点为:围绕在维管组织外层的维管束薄壁细胞较大,并含有较大的叶绿体,这些叶绿体中不含基粒,但形成淀粉粒。
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