322 FUNGI —PLANTS THAT LACK CHLOROPHYLL 
275. Reproduction of the Yeast Plant.—The method of 
reproduction of the yeast plant is similar to that of the 
bacterium, but differs from it in that instead of dividing 
exactly in two, a bud usually pushes out from the side of 
the mature plant. Sometimes the second plant will form 
A , rhizoids; B, sporophores; C, stolon ; D, sporangia. 
a bud before it breaks away from the first, and so a chain 
is made. Often a single plant puts forth more than one 
bud (Figure 290). 
LABORATORY STUDY 
Prepare a Pasteur solution, a good food for yeast, as follows: 
Potassium phosphate .10 parts 
Calcium phosphate. 1 part 
Magnesium sulphate.50 parts 
Ammonium tartrate.50 parts 
Cane sugar. 750 parts 
Sufficient water to make a total of 5000 parts. (This may be used for 
the culture of other molds than yeast and also for bacteria.) 
Yeast. — Examine yeast cells under low power. Note their glistening 
appearance, and their number. Under the high power try to find all 
parts of a typical cell. Label and draw. Look for budding cells and 
chains of cells. Draw. Make a thick paste of water, yeast, and flour. 
