vegetative plant anatomy -...

Vegetative Plant Anatomy

• What is a cotyledon? • What are the differences between monocots

and dicots? • Label the stem anatomy of a monocot. • Label the stem anatomy of a dicot. • Label the root anatomy of a monocot. • Label the root anatomy of a dicot.

Vegetative Plant Anatomy

All parts non-reproductive

Vegetative Anatomy

• Non-reproductive plant structures

• Anatomy vs. morphology – Anatomy = Internal

structures – Morphology = External

structures

A Little Morphology

• Vegetative morphology for Angiosperms (flowering plants) – Monocots vs.

Dicots

Zea Mays (Corn) is a Monocot

Quercus agrifolia (Coast Live Oak) is a Dicot

Stem Anatomy

• Vary between Monocots and Dicots • Structures

– Xylem • Water transport

– Phloem • Sugar transport

– Pith • Starch and sugar storage

Monocot Stem Cross-sectionVascular Bundles

Phloem

Xylem

Monocots lack a pith region in the stem

Dicot Stem Cross-sectionXylem

Phloem

Root Anatomy

• Positions vary between monocots and dicots

• Structures – Xylem

• Water transport – Phloem

• Sugar transport – Pith

• Starch and sugar storage

Monocot Root Cross-section Dicot Root Cross-section

Vascular Bundles

Compound Light Microscopes

To see where no eye has seen before!

Light Microscopes

• Basic observation tool of the biologist

• Can observe objects that are to small for the naked eye to see

• Come in a variety of shapes and sizes

• All use light to illuminate the subject

Microscope Parts and Use• Eyepiece • Body tube

Microscope Parts and Use• Eyepiece • Body tube• Objectives • Stage clips

Microscope Parts and Use• Eyepiece • Body tube• Objectives • Stage clips

• Course Adjustment knob • Fine adjustment knob • Power switch • Base

Microscope Parts and Use• Eyepiece • Body tube• Objectives • Stage clips

• Course Adjustment knob • Fine adjustment knob • Power switch • Base

• Arm • Aperture

Microscope Parts and Use• Eyepiece • Body tube• Objectives • Stage clips

• Course Adjustment knob • Fine adjustment knob • Power switch • Base

• Arm • Aperture

• Stage

Microscope Parts and Use• Eyepiece • Body tube• Objectives • Stage clips

• Course Adjustment knob • Fine adjustment knob • Power switch • Base

• Arm • Aperture

• Stage

• Diaphragm

Microscope Parts and Use• Eyepiece • Body tube• Objectives • Stage clips

• Course Adjustment knob • Fine adjustment knob • Power switch • Base

• Arm • Aperture

• Stage

• Light source

• Diaphragm