BOTAONE T2
Botany Lecture AY 22-23
Roots
TRANS: TOPIC
- upholds plant on the ground
————————Outline————————
I. Main Functions of Roots absorption
•Ancorage
•Absorption - absorb water and nutrients in soil
•Conduction
•Storage conduction
II. Characteristics of Roots
III. Root Systems - transport of minerals
• Taproot System - through xylem or phloem
• Fibrous Root System
IV. Key Terms
• Root Cap
storage
> Mucilage - stores food, nutrients, and water
• Root Hair
V. Primary Eudicot Roots
• Outer Protective Covering characteristics of roots
> Epidermis - non-green (absence of chlorophyll)
> Endodermis - not divided into nodes and internodes
> Casparian Strip - absence of leaves and buds
- Suberin - (+) geotropic (towards gravity)
• Ground Tissues - (+) hydrotropic (towards water)
> Cortex - (-) phototropic (away from light)
> Pith
• Vascular Tissues
> Pericycle Root systems
> Xylem
> Phloem taproot system
VI. Transport Continuum - one prominent main root w/ smaller lateral
• Symplast roots
• Apoplast - very strong anchorage (to need to go deep
VII. Pathway of Water
into the soil)
VIII.Modi ed Roots - dicots
• Storage Roots - survives longer during drought
• Propagative Roots
• Contractile Roots
• Pneumatophores fibrous root system
• Buttress Roots - several adventitious roots
• Photosynthetic Roots - equal size roots arise from base of stem
• Symbiotic Roots - do not branch profusely
> Mycorrhiza - shallow
> Nodule - spread out horizontally
• Parasytic Roots - in monocots
IX. Important Food
• Root Crops
key terms
Main functions of roots root caps
- covering of cells over root tip
ancorage - protects delicate merismatic tissues
- tightly holds soil particles together - statocytes (cells) = gravity perception
Joshua Mercado 12230278
fi
Botany Lecture AY 22-23
Roots
TRANS: TOPIC
- upholds plant on the ground
————————Outline————————
I. Main Functions of Roots absorption
•Ancorage
•Absorption - absorb water and nutrients in soil
•Conduction
•Storage conduction
II. Characteristics of Roots
III. Root Systems - transport of minerals
• Taproot System - through xylem or phloem
• Fibrous Root System
IV. Key Terms
• Root Cap
storage
> Mucilage - stores food, nutrients, and water
• Root Hair
V. Primary Eudicot Roots
• Outer Protective Covering characteristics of roots
> Epidermis - non-green (absence of chlorophyll)
> Endodermis - not divided into nodes and internodes
> Casparian Strip - absence of leaves and buds
- Suberin - (+) geotropic (towards gravity)
• Ground Tissues - (+) hydrotropic (towards water)
> Cortex - (-) phototropic (away from light)
> Pith
• Vascular Tissues
> Pericycle Root systems
> Xylem
> Phloem taproot system
VI. Transport Continuum - one prominent main root w/ smaller lateral
• Symplast roots
• Apoplast - very strong anchorage (to need to go deep
VII. Pathway of Water
into the soil)
VIII.Modi ed Roots - dicots
• Storage Roots - survives longer during drought
• Propagative Roots
• Contractile Roots
• Pneumatophores fibrous root system
• Buttress Roots - several adventitious roots
• Photosynthetic Roots - equal size roots arise from base of stem
• Symbiotic Roots - do not branch profusely
> Mycorrhiza - shallow
> Nodule - spread out horizontally
• Parasytic Roots - in monocots
IX. Important Food
• Root Crops
key terms
Main functions of roots root caps
- covering of cells over root tip
ancorage - protects delicate merismatic tissues
- tightly holds soil particles together - statocytes (cells) = gravity perception
Joshua Mercado 12230278
fi
