AP Biology Lab 9: Transpiration

Рет қаралды 145,881

Күн бұрын

Paul Andersen starts by defining transpiration as evaporation off of a leaf. He then describes how a potometer can be used to measure the rate of transpiration in different environments.
Intro Music Atribution
Title: I4dsong_loop_main.wav
Artist: CosmicD
Link to sound: www.freesound.org/people/Cosmi...
Creative Commons Atribution License

Пікірлер: 30

@philipduodu8867 9 жыл бұрын

Thanks. Very helpful.

@lonababery 11 жыл бұрын

thank you very much for helping everyone need help... please keep on good work

@syrailemaitre7901 3 жыл бұрын

Awesome video! thank you

@iJoemo 11 жыл бұрын

Thanks, this was really helpful :)

@andyyi1399 2 жыл бұрын

Thank you always !

@cupcakebasket6504 4 ай бұрын

Thank you!

@georgeofhamilton 9 жыл бұрын

iamjulietaing1 The control group is that without the heater, fan, light, or bag of mist; it is the first trial that Mr. Anderson explained.

@VivroMori 11 жыл бұрын

Yes. i.e. Increase in transpiration You just said exactly what he said.

@nocturnaldaycreature 11 жыл бұрын

There should be 4 Potometers set up: one in the regular room conditions, one in mist, one in a windy environment (fan), and one in a bright light. The control is the one in the regular room conditions.

@solomongeorge2844 11 жыл бұрын

the last part about the light intensity is not really that true , if there is light the stomata open to allow gaseous exchange for photosynthesis...so more water is lost as the one of the waste products of photosynthesis is water, which is lost by evaporation

@catalinaarbelaezhoyos7499 5 жыл бұрын

what are the units of the chart?

@iamjulietaing1 11 жыл бұрын

What is the control group of the experiment?

@jacks.4005 2 жыл бұрын

I know it’s 8 years late but what kinda question is this

@mshappyface1 12 жыл бұрын

there's one thing that is wrong.. The experiment is not used to measure rate of transpiration, it is used to measure rate of water uptake. Because not all water's used for the process of transpiration, the process will then be useless, some of the water's usually used in metabolic reactions (e.g. photosynthesis) and/or used to rebuild components of a cell, such as cytoplasm or the vacuole. Hope it isn't too late :|

@hansonpepple 5 жыл бұрын

Yes. That's right. Below is a link to a video that explains it in terms of water uptake. m.kzfaq.info/get/bejne/qLN2e9Cnkt65kYE.html

@TheLittlemissghostly 12 жыл бұрын

Are there any experimental error for this experiment? I'm having my Cambridge biology spa exam soon, and they always ask for a source of experimental error and how it affects the results.

@GoArkies 6 жыл бұрын

Xinyi Yap how’d the test go?

@sarayubalachandar53 6 жыл бұрын

i hope you've noticed that the test was six years ago lmao