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Exploring Plant Physiology: Understanding the Fascinating World of Plants

Discover the importance and interesting aspects of plants in our lives, from their role in providing oxygen and food to their diverse uses. This course covers topics such as plant bodies, cells, interactions with the environment, energy conversion, and chemical processes. With hands-on labs and assignments, you will gain practical skills and knowledge about plant growth and development. Whether fulfilling a requirement or seeking to enhance your understanding of biology, this course will make your life more interesting and prepare you for further education.

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Exploring Plant Physiology: Understanding the Fascinating World of Plants

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  1. Plant Physiology 2009 MSH 101 -- MWF 11 am Lab W 1-4 pmMSH 75

  2. Tracking down the green http://rsd.gsfc.nasa.gov/rsd/images/goes8_hg.jpg http://www.theexplorationplace.com/eforest/satellitepic.jpg http://imagesoftheworld.org/jamaica/MVC107F.JPG http://andromeda.cavehill.uwi.edu/Aquatic%20plant%20photos/pond%20plant%20use.JPG http://andy.works4.me.uk/albums/nature/leaf.sized.jpg http://micro.magnet.fsu.edu/cells/leaftissue/images/leafstructurefigure1.jpg http://www.rkm.com.au/CELL/Plant/plantcellimages/plant-cell.jpg http://www.progressivegardens.com/knowledge_tree/chloroplast.jpg http://iws.ccccd.edu/jbeck/Photosynthesisweb/Thylakoiddisk.JPG http://www.steve.gb.com/images/molecules/porphyrins/chlorophyll-a_(tetrapyrrole_highlighted).png http://www.rsbs.anu.edu.au/profiles/Brian_Gunning/Web%20PCB/Ch%2002%20Introduction%20to%20Plant%20Cells/Topic%202%20P&S%20Cells/02%2002%2005.jpg

  3. Looking closer PCB01

  4. chlorophyll

  5. Why plants are cool • Responsible for almost all of life on earth • Oxygen, food • You see them everywhere • Understanding: your life is more interesting • They are useful • Food, fiber, drugs, building material, aesthetics, culture, shade • They are interesting

  6. Plants interesting? • Venus flytrap • Pitcher plants • Castor bean (ricin) • Giant sequoia • miniplants • Spices • Pollination • Interesting sex lives • Biology • Cells

  7. General Topics • Background: plant bodies, cells, skills • How plants do things • Interact with water, minerals (tissues & cells) • Interconvert energy (light, chemical forms) • Make chemical compounds • Control what goes on chemically in cells • Respond to the environment • Develop from seeds into trees (etc.)

  8. Value of this course • Fulfill a requirement • Fill out big chunk of biology • Plant kingdom • How organisms work (high level) • Make your life more interesting • Prepare for further education • “most valuable course” • “best preparation”

  9. Class requirements • Problem sets • Lab handins weekly • No long reports • Mostly graphs and abstracts, some data • Plant growth & development project • 4 quizzes, 3 tests (every other week) • Includes labs for that period • Final exam • Attendance? • What to do if you miss a class

  10. You need • Class manual • $7.50 today (Wednesday) • Labs, exercises, reference, helpful stuff • Text • Comprehensive • At least one per lab group • Need to use after each lecture • Intro Biology text • Flash drive • Fat notebook

  11. How to do well • Come to class • Read text after class • Form a study group now • See Appendix D (“How to survive…”) • Use supplementary material • www.uni.edu/berg, weblog • Instructor’s notes (on web or WebCT) • Downloads (on web or WebCT) • Your Bio I-II text • Turn in good assignments on time

  12. You can get individual help • After class • In lab • Email, phone, weblog • Office hours

  13. Hard class? • Lots of information • Some complex ideas • Maybe you learned a junior version before • We learn the senior version • Things to tie together • Need to use new skills • Thinking • Technical (graphs, computers, writing)

  14. Your study group • Insures frequent contact with material • Keeps you from getting behind • Answer each other’s questions • Helps asker and answerer • Understanding and remembering • Helps with problem sets • Can share a book

  15. Labs • Lab is really important • Hands on experience • Skills • Understanding • Communicating • Handins most weeks • Scored +,  or – • + adds 1 pt to next test grade, - subtracts 1 pt •  has no effect (OK, but not wonderful) • Easy way to get extra points

  16. Fish versus fishing • You can give people fish, and it helps them once • You can teach people fishing, and it helps them forever (even with nonfishing activities) • Most people want fish right now (training, not education) • This course is mostly about learning to fish • Like a foreign language • need vocabulary (facts) • need grammar (relationships, processes) • can't use the grammar without the vocabulary • vocabulary is useless without the grammar • Poincaré: Science is no more a pile of facts than a house is a pile of bricks

  17. Goals for PP: Help you • Native plants, agriculture, gardens, house plants • Reason & communicate • Science as a process (lab experiments, project) • Interested in plants (even animal people) • New lab techniques that are used throughout science • Analyzing and presenting material • Future teachers (and parents) tricks they can use • Fun (solemn vs. serious) • Mostly fishing, not fish

  18. Questions about the course? More details in the course manual. Now to start the content

  19. Physiology = how things work • Verb-oriented, not noun-oriented • Biochemistry, biophysics, molecular biology: provide mechanisms and constraints • Physiology: mechanisms and constraints for evolution, genetics, ecology, and behavior • Levels: cellular, tissue, organ, organ system, organismal.

  20. Water in plants • Moves from soil to seed • From soil into plant to leaves to air • Into cells from surroundings • Questions • Why does it move? • What makes it actually move? • What route does it follow? • What controls how much moves?

  21. Right now • Huddle in groups of 2-3 • List how you can get water to move • Physical methods • In plants, animals or rest of world • Finished? Talked to another finished group • 1-2 minutes • Will list on board

  22. Water movement Plant Physiology UNI 2009

  23. Water moves • Downstream • Wet laundry to air • Humid air to salt or sugar • Ice to salt on sidewalk • Moist soil to seeds or roots • Up a tree trunk • From outside a cell to inside • Or vice versa • From plant to air

  24. What can make water move? • Pressure • Gravity • Solutes • Hydrophilic materials

  25. What do these have in common? • Pressure: high to low • Gravity: high to low • Solutes: free water becomes bound • Hydrophilic substances: free to bound • All from high energy to low energy water • Thermodynamic story

  26. Universal principles • Water moves from high energy to low • Expression of entropy • Energy of water molecules • Physical component (pressure, temp) • Chemical component (interaction with solutes) • Our task: understand and apply to biology • We will be able to predict and explain

  27. Kitchen plant physiology late morning mid-afternoon night next morning

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