STUDY 17. 
A SEED PLANT. An Angiosperm. 
A. The Entire Plant Body. 
1. 
2. 
3. 
Observe its size. Is it an herb, shrub, or tree? 
What is its direction and method of growth? 
What evidence is there that it lives one or more 
years (annual, biennial, or perennial) ? 
B. The Vegetative Shoot. 
1. 
2. 
S 
(a) The Root System. 
Study the origin and form of the roots. 
Make a drawing of the root system. 
(b) The Stem. 
Is there an underground stem? If so, what is its 
form? Why? 
Is the above-ground stem simple or branched? 
Do the internodes vary in length? If so, where? 
Why? 
Is it smooth or rough, and if the latter, what causes 
the roughness ? 
With m. study a cross-section to find the arrange- 
ment of the wood bundles. Make a drawing to 
show its parts. 
(c) The Leaves. 
Are they stalked or sessile? 
What is their form ? 
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