Plant Roots.

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Presentation transcript:

Plant Roots

Types of Root Systems Taproots Fibrous Seminal

Different Types of Roots Buttress Aerial Pneumatophores

Root Development

Root Development

Monocot vs. Dicot Roots

Monocot Root Structure Endodermis Vascular Cylinder Cortex Pith (monocots only) Epidermis

Dicot Root Structure

Root Epidermis Root hairs

Root Cortex

Vascular Cylinder Protoxylem Endodermis Metaxylem Cortex Primary phloem

Xylem elongation

Pericycle

Secondary Roots

Specialized Roots Root nodules Contractile roots

Specialized Roots Dodder (Cuscuta sp.) roots infecting host

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