1. Plant Transport

2. -Wrapping it up Activity
Agenda:
-Bell Ringer
-Transport Notes
-Wrapping it up Activity
-Exit Slip
Bell Ringer
Gymnosperm or Angiosperm?
This plant has a finite growing season and the seeds are encased in tissue.
This plant will stay green year around and has “naked seeds”.
Monocot and Dicot are the two types of the seed plant.
MINI TEST next class!!

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Taxonomy
Plants are divided into two groups
Based on the presence or absence of an internal transport system for water and dissolved materials
Vascular vs. Nonvascular
Vascular Bundles
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4. Nonvascular Plants
Do not have vascular tissue for support or conduction of materials
Called Bryophytes
Require a constantly moist environment
Sporophyte stage
Gametophyte Stage
Moss Gametophytes & Sporophytes
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Nonvascular Plants
Plants can’t grow as tall
Cells must be in direct contact with moisture
Materials move by diffusion cell-to-cell
Sperm must swim to egg through water droplets
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Nonvascular Plants
Includes mosses (Bryophyta), liverworts (Hepatophyta), and hornworts (Antherophyta)
Liverworts
Hornworts
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Vascular Plants
Also called Tracheophytes
Subdivided into two groups -- Seedless vascular plants and Seed-bearing vascular plants (Angiosperms and Gymnosperms)
Club Moss
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Vascular System
Xylem tissue carries water and minerals upward from the roots
Phloem tissue carries sugars made by photosynthesis from the leaves to where they will be stored or used
Sap is the fluid carried inside the xylem or phloem
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9. Vascular Tissue of Root
Plays a key role in water and mineral transport.
Root hair provide large surface area for uptake. This is where most water and minerals are absorbed.
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10. Vascular Tissue in Stem
Monocots- vascular bundles are scattered thoughout the stem.
Dicots- vascular bundles are in a cylinder.
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11. Vascular Tissue in Leaf
Photosynthesis!
Because water also evaporates from surfaces and lost to atmosphere Transpiration occurs!
Lost water is drawn in through xylem vessels.
Gas exchange also occurs here.
When plants give off O2 they open stomata, but then close again so that too much water loss does not occur. They keep them open long enough for photosynthesis to occur.
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Transport in Plants
Water Transport
The combination of root pressure, capillary action, and transpiration provides enough force to move water though xylem even in the tallest plants.
Capillary action- cohesion + adhesion (water molecules stick together)
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Transport in Plants
Nutrient Transport
Nutrients are pushed though phloem. This process moves sugars from sources to a sink.
Sources are where sugar is produced, sinks is a cell where sugar is used or stored.
As nutrients move, this changes concentration levels and changes movement in fluid. As a result- phloem is about to move nutrients any where it is needed.
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15. So putting it all together…

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