biology 206 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Biology 206 PowerPoint Presentation
Download Presentation
Biology 206

Loading in 2 Seconds...

play fullscreen
1 / 45

Biology 206 - PowerPoint PPT Presentation


  • 130 Views
  • Uploaded on

Biology 206. Jeff Young. Janice Lapsansky. Jeff's Page. Lab Page. Grading. Grades will be assigned on the basis of your performance on frequent quizzes and two exams in each of the two portions of the course (animal biology and plant biology), and your laboratory work, as follows:.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Biology 206' - ranger


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
biology 206

Biology 206

Jeff Young

Janice Lapsansky

slide2

Jeff's Page

Lab Page

grading
Grading

Grades will be assigned on the basis of your performance on frequent quizzes and two exams in each of the two portions of the course (animal biology and plant biology), and your laboratory work, as follows:

Lecture exams and quizzes will consist of a mixture of multiple true/false and short essay questions,

  • you write the essay questions (start thinking about questions now).
  • quizzes may be taken with a partner.
slide4

Weeks ~1-5 (JY)

Lecture notes and reading assignments are subject to change.

The assigned reading is considered the minimum required. Students should plan on using the Glossary and the Index in Freeman.

Students are further encouraged to consult other sources when assigned material is not clear.

broad course goals
Broad Course Goals
  • Integrate knowledge gained in Biology 204 and 205,
    • Ecology, Evolution and Diversity (204),
    • Cell Biology (205).
  • Understand how organisms are organized at the molecular, cellular, tissue, organ, whole organism, and mutualistic levels,
    • Literate in the field (writing, listening, speaking)
    • Study skills,
    • Laboratory skills,
    • Other?
jeff young botanist young@biol wwu edu x3638 office bi412
Jeff Young, Botanistyoung@biol.wwu.edux3638Office: BI412

Office Hours

MWF:1-2 am

…by appointment.

Arabidopsis thaliana

Genome-based study of plant physiology and environmental responses.

success is easy if you work hard
Success is Easy…if you work hard.
  • Do the reading assignments before class,
    • know the vocabulary,
    • don’t neglect the figures,
  • Attend lectures,
  • Listen to the lectures, look at the examples, think.
  • Know the material,
    • it’s easier to just learn it, than it is to try to guess or divine your instructors intentions.
overview

Growth &

Development

Transport

Assimilation

Reproduction

Morphology

Responses to the Environment

Overview

Water

Solutes

Carbohydrates

Gas Exchange

Photosynthesis

Mineral Nutrition

Sexual

Asexual

slide9

To Know

"blind as a bat, mad as a hatter, red as a beet, hot as a hare, dry as a bone, the

bowel and bladder lose their tone, and the heart runs alone."

tropane alkaloid

  • Dicotyledonous

Datura stramonium

Jimson Weed

  • Venation
  • Plant Secondary Metabolite
dose response curves

saturation

poison

threshold

Dose Response Curves

Dose (Datura)

Hallucinations

Etc.

dead

Think about this.

the plant body

The Plant Body

One that plants thorns must never expect to gather roses.

- English Proverb

today
Today
  • What are the major organ systems that make up the plant body?
    • what are the major functions of these organs?
  • What are the three major tissues that make up plant organs?
    • what cell types comprise these tissues?
    • what are some functions of these cells?
the plant family

Dicot

Monocot

The Plant Family

Angiosperms

flowering plants

99.5% of extant species

80% of living plants

Cotyledons (embyonic leaves)

dicots monocots
Dicots / Monocots

Study this figure and pay attention in lab and lecture.

organ systems

Floral

Leaf

Stem

Root

Organ Systems

Organs: a specialized center of body function composed of several types of tissues (an integrated group of cells with common structure and function).

organ systems major functions
Organ SystemsMajor Functions

Leaves

Stem

Root

  • Photosynthesis;
    • - synthesis and storage of carbohydrates,
  • Synthesis and storage and other materials.
photosynthesis

atmospheric

oxygen

Photosynthesis
  • We can describe photosynthesis with this reaction:

6CO2 + 6H2O + light ------> C6H12O6 + 6O2

fixed carbon primary metabolites
Fixed Carbonprimary metabolites
  • Grains: i.e. wheat, barley, corn, and rice,
  • Starches: tubers and roots such as potatoes and poi, and stems such as in yams,
  • In other species the carbohydrate is converted to fats;
    • Oils: soybean, corn, peanut, palm, coconut, sunflower, olive, safflower, and many others.
  • Fruits: grapes, figs, olives, dates, apples, mulberries, bananas, oranges, mangoes, etc.
  • Sugar: is stored in stems (sugarcane) or roots (sugar beets),
  • Proteins: plants convert carbohydrate into nitrogen-containing proteins as well. Plant foods high in protein include beans and many other vegetables,
  • Fibers: dietary, also, flax, cotton, etc.
      • we cannot digest fiber, it is nevertheless very useful in our diets….
  • Regardless of how we think of plant contributions to our diet, plants are also the foods of animals, which we also consume as food.
modified leaves
Modified Leaves

Tendrils

Spines

Succulent

Bracts

organ systems major functions1

Floral Organs

Organ SystemsMajor Functions

Leaf

Stem

Root

  • Leaves;
  • Modified for Reproduction
organ systems major functions2
Organ SystemsMajor Functions

Floral Organs

Leaf

Stems

Root

  • Structural Support;
    • - leaves and flowers,
  • Transport and Communication;
    • - between roots and leaves,
  • Storage;
    • - carbohydrates and other materials.
transport and communications

Nutrients

Carbohydrates

Hormones

Small molecules

Others...

Transport and Communications

The tallest living tree today is the Mendocino Tree, a coast redwood (Sequoia sempervirens) found at Montgomery State Reserve near Ukiah, California, USA. 112 m, 1998.

A Eucalyptus regnans at Mt. Baw Baw, Victoria, Australian, was 143 m, 1885.

Arabidopsis

modified stems
Modified Stems

Stolons

Iris

Rhizomes

Ginger, many grasses, some ferns...

Bulbs

Onion, Daffodil, Tulip, Lilies...

Tubers Rhizomes: potatoes, yams*...

organ systems major functions3
Organ SystemsMajor Functions

Floral Organs

Leaf

Stem

Roots

  • Water Uptake,
  • Mineral Uptake,
  • Anchorage,
  • Storage,
  • Synthesis.
anchorage uptake
Anchorage/Uptake

Tap

Fibrous

  • Tap root systems can reach as deep as 50 meters,
    • - lateral (secondary) roots extend from the tap root.

wire grass

Aristida purpurea

  • Tap roots of fibrous-root plants typically perish ,
    • - adventitious roots (extending from the stem) densely fill the surrounding soil,
      • - root surface area of a 4 month old rye plant was measured as 639 M 2.

Blazing Star

Liatris punctata

today1
Today
  • What are the major organ systems that make up the plant body?
    • what are the major functions of these organs?
  • What are the three major tissues that make up plant organs?
    • what cell types comprise these tissues?
    • what are the functions of these cells?
plant tissues

In all organs.

Plant Tissues

Dermal

Ground

Vascular

plant tissues1

Epidermal Cells

w/ Guard Cell

Cotton

Trichomes

Arabidopsis

Stigmatic

papillae

Salt Bladder

Saltbush

Remember: Cuticle

Plant Tissues

Dermal (shoot)

plant tissues2

Root Hairs

Radish Seedling

Plant Tissues

Dermal (roots)

plant tissues3
Plant Tissues

Vasculature

Organization differs in roots vs. stems vs. leaves.

Organization differs in dicots vs. monocots,

Please study Figs. 36.24, 37.7

plant tissues4

Anatomy of Seed Plants

Esau

xylem

H2O / nutrients

Plant Tissues

Vasculature

Tracheids

Vessel Elements

plant tissues5

phloem

carbohydrates/synthates

Plant Tissues

Vasculature

Companion Cell

Sieve Tube Member

plant tissues6

Leaves: not epidermis, not vasculature.

Pith: “inside vascular system”

Cortex: “outside vascular system”

Plant Tissues

Ground

general plant cells
General Plant Cells
  • + unique to plant cells
  • - Plastids ;
    • - chloroplasts,
    • - amyloplasts,
    • - leucoplasts,
    • - etc.
  • - Large Central Vacuole;
    • - single membrane,
    • (tonoplast),
  • Cellulose Based Cell Wall,
  • Plasmodesmata.
parenchyma collenchyma schlerenchyma
Parenchyma, Collenchyma, Schlerenchyma

Parenchyma:

Typically a not distinctively specialized cell with a nucleate protoplast concerned with one or more of the various physiological and biochemical activities in plants. Thin primary walls.

Collenchyma:

A supporting tissue composed of more or less elongated living cells with uneven thickened cell walls. Common in regions of growth.

Schlerenchyma:

Cell variable in form and size and having more or less thick, often lignified, secondary walls. Supporting cells that may or may not be devoid of protoplast at maturity.

  • Study Figs. 36.22, 24, 25
  • Pay attention in lab.

…from Esau.

gap junction vs plasmodesma
Gap Junction vs. Plasmodesma

Gap Junction (animal)

protein lined

Plasmadesma (plant)

membrane lined

apoplast symplast
Apoplast / Symplast

Apoplast

The cell wall continuum of a plant. “Outside of the symplast.”

Symplast

The interconnected protoplasts and their plasmodesmata.

today2
Today
  • What are the major organ systems that make up the plant body?
    • what are the major functions of these organs?
  • What are the three major tissues that make up plant organs?
    • which cell types comprise these tissues?
    • what are the functions of these cells?
friday
Friday

Intro to Plant Form and Function,

  • Ch 36: 791 – 800, pp. 470 - 475
  • Ch 36: 800 – 807.