EXERCISE 115 



Problem. How do spores look, and how do they start new plants ? 



What to use. Microscope ; slides ; cover glasses ; dissecting needle ; water ; sugar ; spores of vari- 

 ous kinds, including pollen grains from flowers. 



What to do. Place a few spores in a drop of very dilute sirup on a glass slide by touching 

 needle to an anther and then touching it to the drop of sirup. Do the same with spore masses of 

 mold growing on bread, fruit rinds, or cheese. Leave in moist chamber overnight. Cover, and examine 

 with microscope. 



Record* By means of drawings and words show the appearance of spores used and of the begin- 

 ning of new plants. 



Questions. 1. In what ways do growths from pollen grains resemble growths from other spores? 

 2. How do growths from pollen grains differ from other spore products ? 



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