AS Biology - Water transport in plants (OCR A Chapter 9.2)
Water is absolutely crucial to the growth of plants. Here we look at how water is transported from the root hairs to the xylem in the roots, before it is transported around the plant through the transpiration pull (which is shown in the 'Transpiration (chapter 9.3)' video).
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@BioRach
3 жыл бұрын
Glad you found the videos helpful! :D Thanks for watching!
@randompersonp119
3 жыл бұрын
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3 жыл бұрын
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3 жыл бұрын
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3 жыл бұрын
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3 жыл бұрын
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3 жыл бұрын
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If the endodermal cell already has a high solute concentration, then why doesn't water form the xylem go backwards into the endodermis?
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Thanks for the video... but isn't vacuolar pathway involved They taught us that in my country
Thank you so much. May God bless you ❤️
why is the apoplast pathway used more often?
@BioRach
3 жыл бұрын
Not sure actually. One possible reason is that the cellulose fibres/layers in the cell wall forms pores, which allow water to retain and travel better through them, in comparison to symplast (which is just glob-y cytoplasm). Then again, keep in mind that this is an observation so doesn't have to have a reason for it...!
I'm confused... how can active transport happen from the endodermis to the xylem if the xylem is just a bunch of dead cells? Thank you
@BioRach
3 жыл бұрын
The endodermis is not part of the xylem, and it's alive, so the endodermal cells can do active transport into xylem. Hope that clears it up, and thanks for watching! :)
@shorea27
3 жыл бұрын
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Just to double check then, so in the symplast pathway, water moves through the cell itself (cytoplasm), through diffusion? But i thought when water was the substance moving, it would be osmosis? Please let me know, thank you :D
@BioRach
2 жыл бұрын
If the water is moving through a plasma membrane, then it would be osmosis. If the two cells are sharing the cytoplasm and have no membrane in between then it'd be diffusion.
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@BioRach
3 жыл бұрын
I'm glad to hear you find the videos helpful! :D And thank you for the support, I really appreciate it 🥰 please use the link here: www.buymeacoffee.com/biorachproject
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