EXERCISE 71 



Problem. How does the monocotyledonous stem compare with the dicotyledonous stem in gross and 

 microscopic structure ? 



What to use. Any good-sized monocot stem, such as cane, corn, bamboo ; a good-sized dicot, such 

 as willow, hickory, maple ; stained sections of young seedlings of corn and ricinus or other dicot herb. 



What to do. Make outline drawings, at least two inches in diameter, of both gross and microscopic 

 structure, labeling the bark, cortex, mass of wood, woody bundles, and pith. 



In the microscopic sections compare the cell structure of the woody bundles. 



CROSS SECTIONS 



MONOCOTYLEDON 



DICOTYLEDON 



Gross Structure 



Microscopic Structure 





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