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3 Cards in this Set
- Front
- Back
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Xylem |
•made of xylem vessels Xylem vessels are joined end to end to form continuous tube with no end walls No cytoplasm because they’re dead Cell walls are thickened with lignin for support. They can be deposited into the walls in different patterns Amount of lignin increases as plants get older Minerals and water move in and out of vessels through pits |
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Phloem |
Transports solutes e.g sucrose Phloem contain sieve tube elements, phloem fibres and companion cells Sieve tube elements have no nucleus and lack organelles. They’re joined end to end with sieve like end walls Companion cells carry out living functions for sieve tube elements and them selfs such providing atp for active transport |
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