MB.2.11. Xylem and Phloem — transport in plants (HSC biology)

Covers the HSC syllabus dot point: “describe current theories about processes responsible for the movement of materials through plants in xylem and phloem tissue” Maintaining a balance module playlist: www.youtube.com Blueprint of life module playlist: www.youtube.com

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Comments ( 25 )
  1. MB.2.11. Xylem and Phloem — transport in plants (HSC biology) « Hourly Book
    October 30, 2012 at 3:22 pm

    […] Biology education Like this:LikeBe the first to like this. Categories: Uncategorized Comments (0) Trackbacks (0) Leave a comment Trackback […]

  2. shankyfranky4
    October 30, 2012 at 3:26 pm

    Thank you !! Very much !! But i know after all this hard work i am gone fail in my exams !! Bad luck !!huh

  3. bubba1match
    October 30, 2012 at 4:18 pm

    THANK YOU SO MUCH! I’m taking a botany class right now in college, and I was having a lot of trouble figuring out what my teacher was trying to say. This video spells the process out quite nicely! 🙂

  4. Wowovac Wowovic
    October 30, 2012 at 4:36 pm

    Looks nice but i can’t load it… WHY! 🙁

  5. KingShitNanda
    October 30, 2012 at 5:06 pm

    Love your videos! Helped me so much 🙂 keep them coming for physics as well!

  6. dasaadz
    October 30, 2012 at 5:22 pm

    Thank you! I just totally forgot how the sieve tube elements work :S do they assist in the movement by providing like a push for the sucrose molecules to move?

  7. 1995Sel
    October 30, 2012 at 6:08 pm

    I have been trying to understand this for ages! And every explanation I have seen has huge gaps in the process. This explained everything! And it filled in so many gaps in my knowledge too.
    Thankyou again! haha

  8. biocuts
    October 30, 2012 at 6:44 pm

    I meant to write ‘two’ not to.

  9. biocuts
    October 30, 2012 at 7:02 pm

    Lets say you have to solutes – one is 10% salt and 90% water. Other is 20% salt and 80% water. You have between these two a membrane.

    The first solute is the lower concentration solute – which means it has MORE water. Therefore, the water will move from low solute (Where there are more water, and less salts) to high solute (where there are less water and more salts), so the concentrations will even.

    Hope that cleared it.

  10. Jazmyn Boo
    October 30, 2012 at 7:06 pm

    Same here. Isn’t osmosis should be from high to low concentration for water? I don’t really get it either.

  11. Jazmyn Boo
    October 30, 2012 at 7:59 pm

    thanks for the vid, although I got very confused in the 1st part of Transpiration. about the osmotic thing. The part where low solute to high solute in osmosis (?). I just don’t get it.

  12. Tom Lyricz
    October 30, 2012 at 8:26 pm


  13. theboy2k12
    October 30, 2012 at 9:14 pm

    thanks a lot 🙂

  14. Letslearnscience
    October 30, 2012 at 9:49 pm

    Transpiration pull is a name (not the only name) for the process that gets water from the roots to the top of trees and plants. I think the ‘Cohesion – tension’ theory is the other name for it.
    I might be mistaken, but i think root pressure refers to how water enters the root from the surrounding soil and in that case would be slightly different to the transpirational pull theory 

  15. theboy2k12
    October 30, 2012 at 10:44 pm

    I assume “Transpirational Pull” is the same as Root Pressure?

  16. babyshilling
    October 30, 2012 at 11:43 pm

    I really like how you speak *.*, thanks for the vid this it was really helpful!

  17. TheLaurenDennehy
    October 31, 2012 at 12:14 am

    this is basically the cohesion – tension theory

  18. Letslearnscience
    October 31, 2012 at 12:32 am

    Haha not irish, everyone thinks its either irish, scottish or canadian though!

    I’m actually born in german, with german parents, but raised overseas. So its kind of a mix of different accents 🙂

  19. VaNiiLaBaBii
    October 31, 2012 at 1:09 am

    ARE YOU irish?

  20. FilmFanatic94
    October 31, 2012 at 1:57 am

    I have an a-level Biology retake next Monday and this helped a lot, thank you! 😀

  21. Shauno19882010baby
    October 31, 2012 at 1:59 am

    haha, its call a u-tube… lmao.

  22. dwaynelovestojig
    October 31, 2012 at 2:10 am

    So helpful! Thanks!

  23. livfaith123
    October 31, 2012 at 2:10 am

    This is wonderful! You make its so simple and clear, and I appreciate the way you continue to clarify. Thank you! 🙂

  24. imunknowntoeveryone
    October 31, 2012 at 2:26 am

    thanks alot bro / sis 🙂

  25. Letslearnscience
    October 31, 2012 at 2:55 am

    thats the same as saying that water travels from ‘high water concentration to low water concentration’, its just the way that water travels via osmosis. The official definition of osmosis is that water travels from an area of low solute (e.g. salt) to an area of high solute. I know what you mean with the cramping, i just wanted it to be on one page to make the summarizing at the end easier, might have been wiser to do it over two pages though 🙂 thanks for the feedback!

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