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Use the diagram of the leaves below to construct dichotomous keys. Identify the steps you followed to identify leaves O, P, Q, R and S  
diagram of leaves. for dichotomous key

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    1. Leaf simple……. Go to 2;
    2. Leaf compound……. Go to 3
  1.  
    1. Leaf with a serrated margin …………………. S;
    2. Leaf with a smooth margin….. go to 4
  2.  
    1. Leaf with three leaflets…………………P
    2. Leaf with more than three leaflets……………Q 
  3.  
    1. Leaf with a pointed apex………………………… R(
    2. Leaf with a rounded apex……………………..R
       Leaf   Steps 
       O
       P
       Q
       R
       1a,2b,4a; 
       1b,3a;
       1b,3b;
       1a,2b,4b;
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