STUDIES OF PLANT LIFE. 
——070500-—_. 
PART 1. 
GROUP I THALLOPHYTES. THALLUS PLANTS. 
STUDY 1. 
PLEUROCOCCUS, NOSTOC OR OSCILLARIA. 
A. Vegetative and Reproductive Stages. 
1, 
DP r go 
With l.p. and h.p. study plants which have been 
properly mounted. What is the size, color, and 
form of the plant ? 
The exterior covering of the cell is the cell wall; im- 
portant contents are the nucleus and cytoplasm, 
which together constitute protoplasm. The green 
coloring matter of plants is chlorophyl. Which of 
these are present in the specimen ? 
Does an individual plant consist of one or more cells ? 
Are the cells alike? If not, how do they differ ? 
What evidence is there of growth and reproduction ? 
What is the arrangement and relation of the new 
plant cells ? 
Make drawings: (a) an individual plant (del. 4 in.) 
and designate all of its parts; (4) other plants of 
smaller or larger size ; (¢) stages of reproduction. 
B 1 
