GCSE Biology - Transport in plants - Translocation (Phloem) and Transpiration (Xylem) #51
ฝัง
- เผยแพร่เมื่อ 28 พ.ย. 2018
- Learn how plants transport sugars via the phloem (translocation) and water via the xylem (transpiration) between the roots and leaves. We also cover the factors that affect the rate of transpiration: light intensity, temperature, humidity and air flow.
If you’d like to practise the material covered in this video, check out our platform at www.cognitoedu.org - it's totally free, and has built specifically to make learning and revision as quick and easy as possible. The main features are:
- Lessons organised by topic, only the lessons relevant to your specific exam board and tier are shown.
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- A huge number of fully-hinted questions that take you step-by-step through some of the trickiest calculations & concepts.
- A huge bank of past exam papers, organised both by year, and also by topic.
Amadeus & Tom
Are your videos for AQA?
@@user-qg4td6rg5x Yes they're mostly AQA I think but also relevant to other exam boards.
From their channel info: "Each video has been designed specifically for the 9-1 GCSE courses, and although they most closely mirror the AQA spec, everything you need to know for the main exam boards will be covered."
@@RevisionR Im doing eduqas will that still work aswell
❤
i think this might be my favourite ever youtube channel (not for entertainment but for school lmao) but u get the point its amazing!
Thank you very much Little Mixer!! we really appreciate it 😊
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I agree
I’d say it’s pretty entertaining
Fr
cramming in for my biology exam that’s in 2 hours
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Sameee
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Same man
Fr
fr
So we're all here 💀
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this is the first time ive properly understood the effect of air flow and humidity, and my test is tomorrow - thank you so much
I can finally understand leaves, thank you!
Me too
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Post-Video Quiz:
1. What are translocation and transpiration? (0:08)
2. What is the phloem and what are its functions? (0:30)
3. What is the xylem and what are its functions? (1:22)
4. What does lignin do? (1:37)
5. What are the four main factors that affect the rate of transpiration? (2:52)
thanks for the effort!
Thank you again, saw you comment all over their videos yesterday
thank you for making these questions. Appreciate the effort :)
Thank you ❤
Thank youuuu! ♡
Hi guys, I really appreciate this video and thank you for taking your time to create it, but I'm still not sure about the whole water gradient thing, if you are able to explain it, that would be really cool!
Hi Hans thanks for the comment! Understanding the water gradient bit will rely on you knowing about ‘osmosis’ - which is the rule that water particles will move from areas of higher concentration to areas of lower concentration. If you haven’t already, give our video on it a quick watch and then rewatch the bit about humidity/airflow. Hopefully the explanations will then make a bit more sense! 👍
Plants make their own sugars through photosynthesis.
Translocation is the movement of materials from leaves to other tissues throughout the plant. And its mainly achieved by flowing the cells which arranged ends to ends to form long columns that called float and tubes.
Transpiration involves loss of water vapour through the stomata of plants. All the water molecules is is being arranged into one long chain then every tongue of water evaporates from leaf out of the stomata, drags the rest of the chains up slightly pulling along another water molecule.
The four factors affecting the rate of transpiration:
Temperature
Light Intensity
Air Flow
Humidity
Nobody asked
I am 16
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Like seriously I am 16
@@manavporwal8006 I asked.
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Hey Asian that's amazing mate well done! Hope you've been enjoying your summer?
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@@sahilwasimm hes probably since changed his username
Ive got Bio p1 tommorow A MASSIVE THANK YOU
WE ALL DOING EXAMS AND WE ALL FINNA PASS INSHA ALLAH WADI BOMBO
I have my gcse's next year and your videos are so clear now im making notes for my mock paper 1's and I will keep those papers for gcse's. Your voice is so clear and the diagrams aswell.
stop scrolling through comments and get revising bro
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I got a bio gcse n 47 mins
Full chapter plz include experiments related to transport in plants... Your explanation is most effective, precise and clear..
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Should you want a career in medicine, then you would need to study biology, and this is a key part of it
unless you wanna be like a doctor or something which is what your parents probably want
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Glad it helped! 😊
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I’ve got my exam on Tuesday for paper one so decided it would be a good idea to know this as it’s a weaker topic for me, just in case of a 6 marker 😫 honestly this account has saved my science so I appreciate it so much especially as my school decided to wait a month before the exam to move me down to combined science higher from triple! Thank you so much :)
me too!
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@@_CertifiedHoodClassic WHAT!!! I didn’t see it in the exam 😭 which exam board do you do? Mines AQA!!!!
@@madeleinej6048 im aqa too. You might remember a sneaky hidden 2 marker about 2 differences between the trans's, but thats about it for this section. Many forgot this and didn't know in my school. I was one of them.
This helped a lot thanks🤲🏼💯
Got some day-before-the-exam studying here lol, thanks for helping me quickly revise the syllabus (:
Excellent explanation ,I alhumdulilah understood everything
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Really happy to hear you found it useful!
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Could you please explain why it is important that dissolved sugars are moved both upwards and downwards in a plant?
this is an amazing video i love it
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You and freesciencelessons are the goats , thank you honestly , I have my gcse mocks in January and I really want to get 3 9s in science and this really helps, howver i do stuggle a lot with the concept of plant tissue, guard cells stomata all the mesophyll too , if there is a video for this please do recommend , ps i subbed
Thank you Barry! Best of luck with your gcses 🤞
goat inna boat
this video improved my understanding so much thank you!
Hi Luna! Thanks so much for taking the time you let us know - really makes a difference! Good luck :))
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Cognito >>> Freesciencelessons
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Well??? What happened
Nice video finally my concepts are ckear
Amazing explanation
Hi, can a transpiration pull occur even if the roots of the plant are not present?
How do the pores in Phloem help the cell sap to flow. Wouldn't it slow it down instead?
The pores allow organic nutrients to pass along the sieve tube from one cell to another . Basically more efficency in transport of organic nutrients like cell sap
Thank u for explaining
Tomorrow is my semester exam and u saved my life🥺
it is good for my students please send a link to download it.
Thank you thank you thank you!
THANK YOU SO MUCH
This is a straight dub of a video
such a good video!
Hey Binnie, thanks for taking the time to say so! Really lovely for us to hear :)
I understand it in a better way. From pakistan
thank you so much!
thank you !
Nice Explained
Good video !!
thank you so much!!! so helpful
You're welcome!
Correct me if I'm wrong but I was taught that The ph of the soil also affects transpiration rates
Nice video Cognito
Thank You!
You’re very welcome!
Night time, a tomato are closed so t can’t take place.
At higher temperatures, the (water) particles have more energy. This makes them more likely to evaporate
Air flow: the inside of the leaf has a much higher gr
nobody asked
Excellent explanation of transpiration. :)
Thankyou Glynis 😊
legend
How are you so good at explaining
Does more transpiration mean more photosynthesis?
i loveeee the handwriting
I am from India.
lovely
Thank you for your effort in explaining these to us.As your title stated is about translocation and transpiration , I would wish to have more information about translocation which related with the phloem loading and phloem unloading stuff. And also I would really like to figure out the usage of sieve cells and companion cells too. Could anyone explain to me by replying my message maybe ?
Hi, that's usually more A-level type content so we don't cover it in these videos i'm afraid :(
@@Cognitoedu alright, understood. thanks
do you need to know about the potometer experiment.
Yes
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We're very glad you enjoyed it A!! 🤩
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Thanks very much - really glad you found it useful :)
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I’m primary five and this is honestly really good, easy to understand. Way better than my teacher’s explanation lol
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Ah yes I’ve been watching this channels videos for a long time now because they’re really helpful to me and it teaches better than my bio, physics and chemistry teachers lol. I mean seriously, I don’t understand anything in school so I hop onto your channel and watch a video on it :D keep up the explanations!!
bro stuff like this is what made me drop out
the xylem tubes look like something from star warrs
hi, thanks for the video, can you please explain to me the air flow on the rate of transpiration and the relatioship between air flow around the plant and transpiration rate? Thanks so much
Hmmm... so here‘s the deal!
To understand the role of airflow in the process of transpiration we ought to first try to understand what air flow really does! A constant airflow just means that the leaf is gonna have fresh air (here fresh indicates unsaturated or less humid air which is yet to be treated by the transpiring water from the plant) gushing over it always, maintaining a good concentrantion gradient, thereby helping water transpire more easily!
Hope it helped!
@@nihaal7750 yes, thank you!