EXERCISE 72 



Problem. What are the important differences between monocotyledons and dicotyledons ? 

 What to use. Specimens ; charts or results of studies to furnish data for following chart. 

 What to do. By means of words or diagrams or both fill in the following table, naming the plants 

 studied in each case. 



MONOCOTYLEDONS 



DICOTYLEDONS 



External Structure 



Internal Structure 



External Structure 



Internal Structure 



Cross Section 



Long Section 



Cross Section 



Long Section 



Shape and Veins 



Cross Section 



Shape and Veins 



Cross Section 



Questions. 1. How many cotyledons in the monocotyledonous seed? in the dicotyledonous seed? 



2. How do the veins of the leaf run in the monocotyledon as compared with the midrib ? in the 

 dicotyledon ? 



3. What is a polycotyledon ? 



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