Identifying Stems and Roots

Diagnostic

 
stem
root
primary phloem and primary xylem
on the same ray
on separate rays
protoxylem and metaxylem
endarch
exarch

Characteristic

 
stem
root
pith and cortex
small relative to pith
pith small or absent

It is important the you are able to differentiate between characteristic and diagnostic features. Which would you rely on most to make up your mind as to whether you were looking at a stem or a root?


Navigate the rest of Module 4 by using the menu items on the left hand side.