module 3 - chapter 9 Flashcards Preview

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Flashcards in module 3 - chapter 9 Deck (1)
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why do multicellular plants need transport systems?

-metabolic demands - many parts don't photosynthesise, removal of waste required, transport of phytohormones, mineral ions from roots to all cells

- size - roots to tips of shoots & stems, perennial plants large

- SA:V - overall small so diffusion insufficient