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In the pressure-flow model, the movement of nutrients through phloem is initiated when water moves from sieve-tube members into companion cells by osmosis, causing sugar in surrounding cells to be transported into sieve-tube members.
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Q20: Which feature places cnidarians as eumetazoans?<br>A) Cnidarians
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Q63: Molluscs are<br>A) deuterostomes.<br>B) acoelomates.<br>C) protostomes.<br>D) pseudocoelomates.<br>E) segmented.