Plant Structure and Function He eats shoots and

Plant Structure and Function “He eats, shoots and leaves. ” J. G. Mexal AGRO/HORT 100 G

HORT Humor

Basic Plant Structure

Vocabulary Seed Structures • • Seed coat Cotyledon Embryo Endosperm Hypocotyl Radicle Epicotyl (plumule) Germination – Hypogeous – Epigeous

Parts of a seed • Dicot Seed coat Hypocotyl Epicotyl Cotyledons Endosperm • Monocot Seed coat Epicotyl Hypocotyl Cotyledon Radicle

Seed Germination Monocot Dicot Epigeous Hypogeous Radicle

Vocabulary Shoots • • Evergreen/Deciduous • Annual/Biennial/Perennial • Xylem (earlywood/latewood) • Phloem • Cambium • Meristem Leaf Petiole Axillary bud Opposite Alternate Whorled Node/Internode

Leaf Arrangement

Leaf Morphology

Leaf Morphology

Woody Plant Stem Stern 2006

Woody Stem Structure

What are the critical parts of a tree? Bark Cambium/Phloem Xylem (earlywood/latewood)

Wood Plant Stem Stern 2006

Vocabulary Flowers • • • Perfect/Imperfect Complete/Incomplete Petals/Corolla Sepals/Calyx Stamen (anther & filament) Pistil (stigma, style, ovary) Reproduction/Fertilization • • • Cross pollination Diploid Fertilization Gametes Genes Haploid Hybrids Pollination Self pollination Sexual reproduction Zygote

Flower Morphology

Structure: Flowers- missing parts • Floral Parts Structure Reproduction • Sepals, Petals, Complete Perfect Stamens, Pistil • Sepals, Stamens, Incomplete Perfect Pistil • Sepals, Stamens Incomplete Imperfect

Structure- Compound Flower/ Sunflower

Structure- Flower. Compound Pistil/ Strawberry

Structure: Leaf Types

Structure: Leaf Venation

Structure: Leaf Arrangement

Structure: Flower Parts

Developing Root Stern 2006

Root Cross Section