1. review how are tissues distributed in plant roots 2. apply concepts why is it important that the...
TRANSCRIPT
![Page 1: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/1.jpg)
1. Review How are tissues distributed in plant roots2. Apply Concepts Why is it important that the root
endodermis permits only a one way passage of materials
3. Classify Draw and label a diagram to show how roots absorb water and nutrients- also include a brief description
![Page 2: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/2.jpg)
CH 23 PLANT STRUCTURE AND FUNCTION23.2 Roots
![Page 3: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/3.jpg)
Types of Root Systems
Taproot systems Fibrous root systems.
![Page 4: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/4.jpg)
Taproot Systems
Taproot Long and thick primary root
Smaller branch roots Mainly found in dicots.
![Page 5: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/5.jpg)
Fibrous Root System
Many equally sized branch roots that grow separately from the base of the stem
Begins with one primary root Help hold topsoil in place Found mainly in moncots.
![Page 6: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/6.jpg)
Root Tissues
Dermal tissue Ground tissue Vascular tissue Apical meristem.
![Page 7: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/7.jpg)
Dermal Tissue
Also called Epidermis Protection Absorption Root hairs to increase surface
area.
![Page 8: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/8.jpg)
Ground Tissue
Cortex is one portion of ground tissue
Directly inside of epidermis Water and minerals move
through to get to center of root
Store photosynthesis products (starch).
![Page 9: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/9.jpg)
Ground Tissue
Endodermis Completely encloses the
vascular cylinder Plays essential role in
moving water and minerals to the center of root.
![Page 10: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/10.jpg)
Vascular Tissue
Vascular cylinder Region made up of Xylem
and Phloem.
![Page 11: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/11.jpg)
Apical Meristem
Root cap Protects meristem Secrets slippery substance
to help root move through soil
Cells constantly being scraped away and replaced.
![Page 12: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/12.jpg)
Root Functions
Uptake nutrients Transport nutrients Support plant Anchor in ground Store nutrients.
![Page 13: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/13.jpg)
Uptake Nutrients Need inorganic nutrients Also trace minerals.
![Page 14: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/14.jpg)
Transport Nutrients
Active transport brings mineral ions across the epidermis
High mineral ions concentration causes water molecules to move into the plant by osmosis.
![Page 15: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/15.jpg)
Transport Nutrients
Water and dissolved minerals pass through the cortex and move toward the vascular cylinder.
![Page 16: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/16.jpg)
Transport Nutrients
Vascular cylinder is enclosed by the endodermis and a special waterproof zone called a Casparian strip.
![Page 17: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/17.jpg)
Casparian Strip
Forces water and minerals through the cell membranes of the endodermis rather than in between the cells
Controls water and minerals entering vascular cylinder doesn’t allow to leak back out.
![Page 18: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/18.jpg)
Root Pressure
Water is forced in by osmosis due to active transport of minerals
Water enters through casparian strip and is forced up.
![Page 19: 1. Review How are tissues distributed in plant roots 2. Apply Concepts Why is it important that the root endodermis permits only a one way passage of materials](https://reader033.vdocuments.us/reader033/viewer/2022061414/56649c915503460f9494c665/html5/thumbnails/19.jpg)
Root Pressure
Glass tube replaced stem and leaves of carrot.