BOTANY
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BOTANY. Botany Questions. How did you use/benefit from plants over the last 24 hours? What are the major plant organs? What do vascular tissues do?. Food Products. Vegetables (non-reproductive parts). Food Products. Fruits Food from ovaries of flowers. Food Products. Legumes

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Botany

BOTANY


Botany questions

Botany Questions

  • How did you use/benefit from plants over the last 24 hours?

  • What are the major plant organs?

  • What do vascular tissues do?


Food products

Food Products

  • Vegetables (non-reproductive parts)


Food products1

Food Products

  • Fruits

    • Food from ovaries of flowers


Food products2

Food Products

  • Legumes

    • Soy bean, green beans, peanuts

  • Nuts

    • Walnut, almond


Adaptation to land

Adaptation to Land

  • Cuticle

    • Waxy, waterproof barrier prevents evaporation

  • Stoma

    • Gas exchange


Adaptation to land1

Adaptation to Land

  • Seeds

    • Embryo + food + seed coat

Provides post-germination energy

May include dispersal mechanisms


Adaptation to land2

Adaptation to Land

  • Vascular System


Adaptation to land3

Adaptation to Land

  • Vascular System

    • Vascular bundles contain both tissue types


Plant phylogeny

Plant Phylogeny


Mosses bryophytes

Mosses (Bryophytes)

  • Mostly haploid

  • No cuticle

  • No vascular system

  • No seeds


Ferns

Ferns

  • Mostly diploid

  • Cuticle

  • Vascular system

  • No seeds


Gymnosperms

Gymnosperms

  • Mostly diploid

  • Cuticle

  • Vascular system

  • Seeds (from cones)


Angiosperms

Angiosperms


Monocots dicots

Monocots & Dicots

Monocotyledons

Cereal crops, grasses, palm trees

One seed leaf

Dicotyledons

Beans, roses, cactuses, most trees

Two seed leaves


Monocots dicots1

Monocots & Dicots


Stems

Stems

  • Function

    • Transport of materials between roots and leaves

    • Elevation of flowers and leaves


Secondary growth

Secondary Growth

  • Vascular cambium produces new xylem (to the inside) and phloem (to the outside).

Vascular

Cambium

Phloem

Xylem


Secondary growth1

P

Secondary Growth

P

P

P

P

P

P

P

P

P

P

P

P

VC

VC

P

P

VC

VC

X

X

P

VC

VC

X

X

X

X

VC

X

X

X

X

X

X

X

X

X

X

X

X

X


Stems1

Stems

Vascular

Cambium

Summerwood

Springwood

Summerwood

Springwood

Phloem

Xylem


Stems2

Stems


Leaves

Leaves

  • Function

    • Produce carbohydrates

  • Structure

    • Mesophyll

    • Vein

      • Xylem on top

      • Phloem on bottom


Plant review

Plant Review

Monocot or Dicot?


Plant review1

Plant Review

  • What flower parts are female?

  • How are dead xylem cells still functional?

  • What is a common source for the flow of phloem sap? What’s a common sink?

  • What comprises the bark of trees?

  • What is the advantage of plants expending large amounts of energy for large, showy flowers?


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