31. Q. How is common wood made up? A. Of a number of these cells arranged
side by side.
32. Q. Of what shape may vegetable cells be? A. They may be globular,
oval, conical, prismatic, cylindrical, branched, or of any other form.
33. Q. What are some of the varieties of formed material into which the
bioplasm within the cell wall may be transformed? A. They may be solid,
as coloring matter, starch, crystals, and resin; or fluid, as oil and
gum, or solutions of sugar or tannin.
34. Q. What is the most important of these substances called? A.
Chlorophyll, the source of the green color of plants.
35. Q. What other product of vegetable cells is even more widely
distributed than chlorophyll? A. Starch.