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Roots, Stems and, Leaves

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by

Sherry Sabaj

on 30 March 2016

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Transcript of Roots, Stems and, Leaves

Roots, Stems & Leaves
Root Structures
Root structures are important because they help anchor the plant.
Types of Roots
When a seed grows it produces a
primary root
, if this primary root becomes the
largest root
then it is called a
taproot
Ex. Carrots, Radishes, Beets, etc...
Stems
Types of stems
Stem Functions
The stem helps in the function of transport of nutrients, water, storage of nutrients, and the support of leaves.

Taproot
Fibrous Root
Adventitious Root
When the primary root does not become the largest root, but instead it develops into
numerous small roots
that branch it is called a
fibrous root
.
Ex. Corn, Coconut, Grass, etc...

***Adventitious roots – specialized roots that grow from uncommon places, such as stems and leaves.
All plants begin their development as HERBACEOUS (non-woody) organisms. True WOODY plants eventually develop WOODY stems.


In some plants storage is the major function. In cacti their stems are specialized for water.

A white potato is an underground stem that is specialized for storing starch.
They also absorb and transport water and minerals through tiny hairlike projections called
root hairs
. They add surface area to the roots.
Examples of nutrients:
Nitrogen & Magnesium
Full transcript