BOTAONE T2
Botany Lecture AY 22-23
stem
TRANS: TOPIC
————————Outline———————— production of new tissues
I. Stem Functions
- apical meristems
- lateral meristems (secondary growth)
• Support
• Conduct
• Production of New Tissues types of stems
II. Types of Stems
• Herbaceous
> Annual herbaceous
> Biennial - primary growth
> Perennial - dicot
• Woody - monocot
III. Tissues of Herbaceous Stems - have no persistent woody stem above
• Epidermis ground
• Vascular Tissues - exible, green stems
> Xylem - annual, biennial or perennial plant
> Phloem
• Ground Tissues
> Cortex annual
> Pith - germinate, ower. set seed, die all in one
IV. Modi ed Stems season
• Aboveground Stems - reproduces by itself
> Thorn
> Tendril
> Cladophyll biennial
> Stolon/Runner - completes life cycle in two growing seasons
> Sucker - rst season = roots, stems, and leaves
> Tiller - second season = owers, fruits, and seeds
> O set - native to temperate climates
• Underground
>Tuber
> Bulb perennial
> Rhizome
- plant that lives more than two years
> Corm
- “through the years”
V. Other Terms
- ower every year
• Lenticels
• Cuticle
VI. Economic Importance woody
- primary growth
Stem functions - secondary growth
- division and enlargement of parenchyma
tissue
support - dicot
- leaves and reproductive structures - hard stems
- have buds that survive above ground in
winter
conduct - cambium
- water, dissolved minerals, carbohydrates
Joshua Mercado 12230278
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Botany Lecture AY 22-23
stem
TRANS: TOPIC
————————Outline———————— production of new tissues
I. Stem Functions
- apical meristems
- lateral meristems (secondary growth)
• Support
• Conduct
• Production of New Tissues types of stems
II. Types of Stems
• Herbaceous
> Annual herbaceous
> Biennial - primary growth
> Perennial - dicot
• Woody - monocot
III. Tissues of Herbaceous Stems - have no persistent woody stem above
• Epidermis ground
• Vascular Tissues - exible, green stems
> Xylem - annual, biennial or perennial plant
> Phloem
• Ground Tissues
> Cortex annual
> Pith - germinate, ower. set seed, die all in one
IV. Modi ed Stems season
• Aboveground Stems - reproduces by itself
> Thorn
> Tendril
> Cladophyll biennial
> Stolon/Runner - completes life cycle in two growing seasons
> Sucker - rst season = roots, stems, and leaves
> Tiller - second season = owers, fruits, and seeds
> O set - native to temperate climates
• Underground
>Tuber
> Bulb perennial
> Rhizome
- plant that lives more than two years
> Corm
- “through the years”
V. Other Terms
- ower every year
• Lenticels
• Cuticle
VI. Economic Importance woody
- primary growth
Stem functions - secondary growth
- division and enlargement of parenchyma
tissue
support - dicot
- leaves and reproductive structures - hard stems
- have buds that survive above ground in
winter
conduct - cambium
- water, dissolved minerals, carbohydrates
Joshua Mercado 12230278
flfi ff fi
fl fl
