STUDY 2. 
YEAST PLANTS AND BACTERIA. 
A. Vegetative and Reproductive Stages. 
1. Study mounted specimen with h.p. What is the 
size, form, and color of the plant cell ? 
2. What cell structures are present? The clear spaces 
in the cytoplasm are vesicles (vacuoles?). Are 
these present ? 
3. Are single cell forms found? When associated how 
are they related ? 
4. What evidence is there of reproduction ? 
5. 
Make drawings: (a) a single cell (del. 4 in.) and 
designate the parts; (6) other plants of different 
sizes; (¢) stages of reproduction. 
B. Life Problems. 
1. 
2. 
So Se Oe 
= 
Where do these plants grow? Why? 
How can it be shown that they are living things? 
Experiments 1, 2, 3, 5, and 8. 
Are they beneficial or injurious? Why? 
How are they so well distributed ? 
What is their food and how do they obtain it? 
What substances do they form as products of their 
activities? 
Can these plants grow in strong salt or sugar solu- 
tions? Why? 
Experiment 9. 
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