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Transcript of This presentation was produced and is copyrighted by Stewart-Peterson® Inc. 2003-2011. Permission...
![Page 1: This presentation was produced and is copyrighted by Stewart-Peterson® Inc. 2003-2011. Permission is granted for use by active AgEdNet.com® subscribers.](https://reader036.fdocuments.us/reader036/viewer/2022062407/56649d305503460f94a087f0/html5/thumbnails/1.jpg)
This presentation was produced and is copyrighted by Stewart-Peterson® Inc. 2003-2011. Permission is granted for use by active AgEdNet.com®
subscribers. All other use is prohibited. STEWART-PETERSON and AGEDNET.COM are registered trademarks of Stewart-Peterson Inc.
![Page 2: This presentation was produced and is copyrighted by Stewart-Peterson® Inc. 2003-2011. Permission is granted for use by active AgEdNet.com® subscribers.](https://reader036.fdocuments.us/reader036/viewer/2022062407/56649d305503460f94a087f0/html5/thumbnails/2.jpg)
This presentation was produced and is copyrighted by Stewart-Peterson® Inc. 2003-2011. Permission is granted for use by active AgEdNet.com®
subscribers. All other use is prohibited. STEWART-PETERSON and AGEDNET.COM are registered trademarks of Stewart-Peterson Inc.
![Page 3: This presentation was produced and is copyrighted by Stewart-Peterson® Inc. 2003-2011. Permission is granted for use by active AgEdNet.com® subscribers.](https://reader036.fdocuments.us/reader036/viewer/2022062407/56649d305503460f94a087f0/html5/thumbnails/3.jpg)
Learning Targets Learning Targets
Students will be able to: 1. Explain what a leaf is and its parts. 2. Know the difference in compound and
simple leaves.3. Explain how to identify leaves from other
ways.
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Leaves – the real work horses:Leaves – the real work horses:Main function: to make food and other
chemicals needed for growth and reproduction
Where Photosynthesis takes place
ARS photo.
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Why do leaves turn colors? Why do leaves turn colors?
The chlorophyll dries up Give it its color change
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Leaf Parts Leaf Parts Margin Vein Blade PetioleMidrib
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Main leaf parts:Main leaf parts:Blade:
broad, thin part of the leaf
NRCS graphic
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Main leaf parts:Main leaf parts:Petiole:
narrow cylindrical part, may not be apparent
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Main leaf parts:Main leaf parts:Margin:
Edge of leafMargin
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Leaf Margins Leaf Margins Entire
Smooth margins Wavy
Waved margins Serrate
Sharp margins Angular Sharp
Wavy sharp margins Lobed/Notched
Open loops
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Main leaf parts:Main leaf parts:Veins:
Structural framework of the leaf
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Leaf Veins Leaf Veins Venation (veins) – parallel, pinnate,
palmate, forked
U.S. Geological Survey drawings
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Main leaf parts:Main leaf parts:Midrib:
Large center vein Midrib
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2 types of leaves:2 types of leaves:Simple
leaf with one bladeExamples: grasses,
oak, apple
Compound
several leafletsMay be joined to the
petiole or along the central axis of the leaf.
U.S. Geological Survey graphics
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Leaves and Branching Patterns Leaves and Branching Patterns Alternate
Leaves alternate each other
OppositeLeaves are opposite
each otherWhorled
Leaves in a swirl pattern
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Questions????Questions????
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Leaf Assignment Leaf Assignment Copy down the following chart, leave
space between each line:Drawings
Leaf Type Compound LeafAlternating Branch Opposite Branch Whorled Branch Entire Leaf Margin Wavy Leaf Margin Serrate Leaf Margin Angular Sharp Leaf Margin Lobed/Notched Leaf Margin Parallel Vein Pinnate Vein Palmate Vein Simple Leaf
Drawings Examples
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Cont……Cont……
Define each word on the left sideDraw a picture in the middleGive an example on the right side
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Leaf Assignment Example Leaf Assignment Example
Leaf Type Compound Leaf
Drawings ExamplesWhite Oak
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Ticket out the Door Ticket out the Door
Get out a piece of paper and write your name on it
Answer the following questions: 1. Write 3 things that you learned 2. Write 2 things that you found interesting 3. Write 1 thing that you have questions about