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Plant Structure.pdf

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Vascular tissue<br />

Phloem: consists of sieve tubes and companion cells, for transport of<br />

carbohydrates from areas of photosynthesis<br />

Sieve tubes have cytoplasm, and cell membrane, but lack a nucleus,<br />

and are maintained by companion cells (modified parenchyma cells)<br />

Sieve tube elements connected through sieve plate

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