Roots

Plant Roots Structure and Function Author: Mike Dana Revised by: Geonyzl Alviola Reference:http://www.hort.purdue.edu/hort/courses/HORT101Spring/Roots/index.htm

Objectives of today’s lecture: ,[object Object],[object Object],[object Object]

Functions of the Root ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Functions of the Root ,[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],Root hairs Root hairs

Tissues of the root Epidermis Cortex Endodermis Pericycle Vascular System Phloem Cambium Xylem Root tissues can be regarded as a series of concentric rings of different tissues

Epidermis ,[object Object],[object Object],[object Object],[object Object],Epidermis Cortex Endodermis Pericycle Vascular System Phloem Cambium Xylem

[object Object],[object Object],Cortex Epidermis Cortex Endodermis Pericycle Vascular System Phloem Cambium Xylem

Endodermis ,[object Object],[object Object],[object Object],Epidermis Cortex Endodermis Pericycle Vascular System Phloem Cambium Xylem

Endodermis ,[object Object],[object Object],[object Object]

Pericycle ,[object Object],[object Object],[object Object],[object Object],pericycle

pericycle phloem xylem root hair endodermis epidermis cortex

Vascular tissue ,[object Object],[object Object],[object Object],[object Object],[object Object]

Vascular tissue ,[object Object],[object Object],[object Object]

A long look at the root ,[object Object]

A long look at the root ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

A long look at the root ,[object Object],[object Object],[object Object],[object Object],[object Object],root apical meristem root cap

Organ Tissue Cell Type Root Epidermis Vascular System Cortex Parenchyma Endodermis Pericycle Casparian Strip Parenchyma Epidermal Root hairs Phloem Cambium Xylem

Root Development ,[object Object],[object Object],[object Object],[object Object],radicle

Primary root Adventitious root

Root modifications ,[object Object],[object Object]

Modifications of the root ,[object Object],[object Object]

Types of Roots ,[object Object],[object Object],[object Object],[object Object]

Contractile roots ,[object Object],[object Object],[object Object]

Haworthia emelyae v. comptoniana

Haustoria ,[object Object],[object Object]

Prop roots ,[object Object],[object Object]

pneumatophores ,[object Object],[object Object]

Buttress roots ,[object Object],[object Object]

Roots

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