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Exam2BKey - Biology 220 Exam 4 Summer 2009 Name_Key(A TA...

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Biology 220 Exam 4 Name____________ Key (A) ____________ Summer 2009 TA_______________________________ 1 1. (3 pts) Give one piece of evidence that the cotyledons are not initiated by the SAM. -The cotyledons are formed in the embryo before the SAM is visible. -stm mutants have cotyledons, but no SAM 2. (6 pts) Match the following terms to the labeled tissues above. Use each letter once. ___ C ___ bark ___ D ___ secondary xylem made in the late summer or fall ___ F ___ ground tissue ___ E ___ wood made during the most recent year of secondary growth ___ B ___ vascular cambium ___ A ___ secondary phloem C A B D E F
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