Vascular plant parts have roots, stems, and leaves'

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Vascular plant parts have roots, stems, and
leaves.
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Roots
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Roots

• Fibrous roots-
• Under the soil
• thick and tangly
• Prevent soil erosion and act as an anchor

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Prop roots
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taproot
These roots can reach water that is deep in the
ground.
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Root Hairs
Roots take in water and nutrients through root
hairs
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Stem
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Xylem
The tubes that transport water and nutrients
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phloem

• The tubes that carry food.

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Leaf
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Chlorophyll gives leaves their green color.
When fall days are shorter, leaves stop making
Chlorophyll and other pigments can be seen.
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Stomata

• Carbon dioxide enters a leaf, and oxygen and
  water leave it through the stomata

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What is the main thing leaves do?

• They make food for plants!

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This kid and her plant use each other.     
What is she giving to the plant? What is the
plant giving to her?
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(No Transcript)
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Chlorophyll
A pigment, or coloring matter, that helps plants
use light energy to produce sugars.
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chlorophyll

• Helps plants use light energy to produce sugars.
• Gives leaves their green color.
• Most leaves stop making chlorophyll in the fall.
  
• Thus, leaving other pigments in the leaf (red,
  yellow, brown, etc.)

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Puzzler 1 A tree inhales carbon
dioxide     it needs to if it's to survive.But
can it release enough O2     to keep just one
person alive?          
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Puzzler 1 Yes Well, a bonsai tree couldn't
produce enough oxygen to keep someone alive, but
an average-sized tree certainly could. In fact,
an average-sized tree could produce enough oxygen
to keep from two to four people alive.
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Puzzler 2 A plant needs its own food to
function.     It can't make its own food at
night.Beyond a few hours of darkness,     can a
plant stay alive without light?
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This is really a trick question. "No" should be
correct a plant can't stay alive without a
regular dose of light but it isn't entirely
correct. Yes, plants do need food to survive,
and yes, they generally get this food through
photosynthesis. However, experiments have shown
that it is theoretically possible to keep a
non-photosynthesizing plant alive, at least for a
while.
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Puzzler 3 A plant that receives the nutrition
it needs     will continue to live, we now
know.But what if we took all its O2
away?     Do you think that the plant could
still grow?
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Puzzler 3 No That's right. The plant would not
grow. It is true that a plant needs to take in
carbon dioxide in order to survive and that it
expels oxygen as the waste product of
photosynthesis. But a plant doesn't only store
the food it produces it uses some to feed
itself.
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Vocabulary

• xylem
• phloem
• photosynthesis
• chlorophyll
• chloroplast
• stomata