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Vascular Plants - 5th Grade

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by

William Begoyan

on 26 March 2015

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Transcript of Vascular Plants - 5th Grade

Vascular Plants
5th Grade

By: Mr. Begoyan
Page A62-A77 in Textbook
What makes a vascular plant
There are more than 500,000 types of different vascular plants on Earth.
All vascular plants have the following in common:
1. Roots
2. Stem
3. Leaves
Roots
For many plants roots, can be spread out longer than their branches.
Roots play several key roles:
1.
They anchor the plant and keep it from falling over.
2.
Roots take in water and minerals from the soil.
3.
Some roots act as storage for energy.
There are many different types of roots, all are adapted to their environment.
Roots found on grasses are thin and hairlike.
Roots on most tree are thicker and hard, we call them fibrous roots.
Some plants will store excess nutrients (mostly as starchy sugar) in their roots. These are
storage roots.
Stem
Leaves
Stems
carry water and nutrients taken up by the roots to the leaves.
Most stems grow upwards, towards the sun.
Weird exception to the rule!
Some plants, like the barrel cactus and sugarcane, will store nutrients in their stems.
Stem sizes can range from really small, like grass stems...
...to giant stems, like the tree trunks of Sequoia trees.
Stems are mostly hollow, with tiny tubes running the length of the stem, connecting roots, branches, and leaves.
There are 2 types of tubes.

Xylem
, which transport water and only move one way.
Phloem
, which transport nutrients and sugar, and move both ways.
Leaves are the terminal (ending) points for most plants.
Most leaves are thin and flat.
There are many different shapes of leaves
Leaves are "food factories" for plants.
They use nutrients and water from the soil, and carbon dioxide form the air to produce sugars.
Leaves are produced on stems, where photosynthesis takes place.
While the leaves seem simple, they are composed of many different layers.
Leaves have tiny openings on their surface called
stomata
that help carbon dioxide come in and oxygen exit.
Inside the leaves are structures called
chloroplasts
.
Inside the chloroplast you have pigments like
chlorophyll
which will do photosynthesis (making sugar using light).
Full transcript