Since you are asking this question, I will assume you know the lifespan of a dandelion. (If you do not, then it has a short life compared to other flowering plant species.) If the dandelion's only purpose is to send out its seeds and die, it has no need to use extra resources reinforcing its stem. The way it has its stem right now is a good enough stem to support the plant for its life. It does not need the material to make a full stem because it has a very simple goal. As long as it can transport the water and dissolved nutrients to the leaves, then it can carry out its purpose in life.
newdiv
cactus have a hollow stem. it is where they store water and food for survival
because, its delicious!
the xylem cells in the stem are hollow so that the water & the minerals from the soil can be passed on to the leaf.
hollow stem
yung matubig tubig
The hollow cavity of the bamboo stem is called INTERNODE and the the rings are called INTRANODES.....
Lotus is an aquatic plant fixed at the bottom of the pond. To reach the surface of the water lotus stems are thin & hollow.
Lotus stem is also known as kamal kakdi
Because of it's hollow stem.
These are the xylem cells that transport water into the plant from the roots. They are also dead.
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