Potometer Experiment : Measuring the rate of transpiration. A-level Biology Experiment

Learn how a potometer shows the rate of transpiration and the associated calculation. Learn how to set up the equipment, collect the data and try some common exam questions linked to this A-level biology topic.

**** Corrections at 7.57mins. The units should be mm^3 min^1

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[MissEstruchBiology]

Hello!

I hope this video helps you with your Biology A-level😊

[Schmingle]

The photometer practical is the worst thing in the world. I hate it with a passion. If I could remove one thing from the syllabus it would be this stupid waste of time. Try and get it set up for an hour then wait 30 mins for the stupid air bubble to move 1mm I HATE IT

[shreyalapsia]

thank you for taking the time to make a powerpoint and explain it fully :)

[izzy]

Thanl you so much! I am on study leave right now and panicked when I couldn't remember how to set up a photometer. This was super useful and I can confirm I officially understand!

[dijasoar]

You make every thing so easy thank you so much 🥺❤️

[elliebrunton]

I’ve got a practice paper and I’m stuck on a question : suggest how the student moved the air bubble back to 0mm. Please help love your vids x

[elianahanstater]

Thank you so much!! You really helped me understand this experiment

[sepilepi]

thank u so much for explaining, i understood the whole thing

[murriammurtaza]

thankyou soooo much for this video. I didn't understand it in class but you explained it so well and now I'm confident with it

[leannegillingham]

Amazing!! Answered lots of my questions : )

[chiranthipoornima]

It was very useful.thank you very much

[hainguyenanghoang]

wow, thanks for your experiment. I very like it

[mohid]

Hey, I'm really confused at 05:30.

How do I calculate vol. of water that has moved from the volume of the cylinder?

[aggelikichrisomalli]

Thank you! The video was really helpfull! What if, instead of water inside the potometer we put 0, 4 M NaCl solution?

[mikeoxlong]

have an exam ina few days for biology and am literally sturggling. this videos of yours really helped me :)

[arrybababecool]

Very nice mam good work keep it up so lovely

[zombietron]

why does cohesion tension create a negative pressure in the xylem?

[rusherrusher]

Hi, your videos are very helpful!

Will the practical (the Potometer one) be in the AS level paper (2022) ?
It would be great if you could reply tomorrow since my exam is the day after.

Thank you

[EmmaMungolo]

Didnt have a clue on how this thing worked 😂 Thank you

[amirabdullah]

Is the pressure inside the tube is lesser than air?