your videos are great for people like me, who has had a substitute teacher in all sciences since year seven (I'm in year eleven now and has just gotten my first proper teacher)
You are an absolute legend! If I somehow (against all odds) manage to pass this biology test, it'll be a miracle, and it'll be mostly down to you thank you so much.
just did paper 1 today and after watching this video countless times over the last few months and finally understanding, it really helped in the exam! THANK YOU SIR
wow I only started watching these a few months ago and I'm getting good scores in science in year 11, you must be on the way to an A* if you're watching in year 7/8. Keep it up bro.
Hi and thanks for the comment. You have to know hardly anything about translocation (essentially what it is) so I've included that in the video Plant Tissues.
Hello and thank you for these wonderful videos - just wondering when the plant closes it's stomata meaning it cannot photosynthesise Is that when the plant uses starch as the storage molecule as energy to make food etc.. ? Thank you
Yes if the plant cannot make glucose because photosynthesis is not active, then it will break down the starch stores, releasing glucose for respiration.
Sir, at 2:36 of your captivating science lesson what does that link to I’m generally confused does the stomata just naturally open up to carbons dioxide I would appreciate it if you replied thanks.
When light intensity increases, this causes the rate of photosynthesis to increase in the plant cells, including the guard cells, which control the size of the stomata. This increased rate of photosynthesis causes a series of reactions to take place in the guard cells which cause them to change their shape, opening the stomata.
Great video! I have a question. You said that the rate of transpiration increases in higher temperatures but then you said that in hot conditions, the stomata close to reduce water loss by transpiration. How does the rate of transpiration increase if the stomata are closed?
Plants cannot photosynthesise if their stomata are closed so there is a time when the temperature increases before the stomata close. During this time, there is a high rate of water loss by transpiration. However, once the stomata close, the rate of water loss falls.
great video but i have a question.what is transpiration in a simple definition. I think it would be how water frm the plants go up through the stem by the xylem and into the atmosphere. is that right, sir?
Can u pls explain me how to get into triple science....I m really desperate to become a doctor....the whole GCSE system is new to me as I moved to uk 6months ago..will my dcp grade affect? What if I get really good marks in the assessment week but the dcp grade is low? Will I still get into triple science?.. thank you 🙏☺️
Hi and sorry for the late reply. Please do not get hung up on getting into Triple Science. Medical schools do not look for triple science in their applications. All they look for are good grades. So aim for high levels in your GCSE Sciences (in either Triple or Combined Science). Personally, I think that many students who take Triple Science would get better grades if they had taken Combined Science as there is less content to learn. Good luck and I hope that you achieve your wish to become a doctor.
Trust me you don't want to do triple science. Trust me it's horrible and hard to understand since some A Level knowedge is added. Stay in Combined Science, you can do any science in A Level without Triple Science. If I were you I'd aim for a 6 and above
Hi, I'm having a hard time understanding this. So, transpiration is the evaporation of water on the surface of the leaf right? As, leaf evaporates water, water vapour passes through tiny air spaces in the spongy mesophyll and out the stomatal, which cause water loss in the plant. The root hair cell transports water to xylem vessel cell to transport it to the rest of the plant to make up for water loss and for photosynthesis to occur. (Mineral ions - mg for chlorophyll too. Is this the transpiration stream?
you said at 2:00 that the rate of transpiration is greater at higher temperatures but then you said at 3:09 that the stomata close in hot conditions to reduce heat loss?
You mentioned how the stomata is closed during high temperatures. Surely during the summer photosynthesis can never occur as it is always hot and the plants will die?
The stomata only opens for photosynethis to occur. When light intensity is high the guard cells allow the stomata to open so photosynethis can occur. There is a difference between humidity and light intensity. If the air is humid the stomata will close to reduce the water loss by evaporation, as if the air is too hot photosynethis won't occur as the enzymes in the plant will denature. Hope that clears it up :)
His smile cures my depression
same 😂 i always skip to the end just to see his smile 😂😭
This is the most underrated comment in history
BAHAHA ENNIT 😂😎
Same
😂Hope you're good mate
top 10 people who'd make the whole UK mourn if they died
Not just the UK, I'm in the middle east and this guy is my saviour
@@noorarif4905 same
@@_Dreamer_9306 what's an army like myself doing here? 0_0
@@MintyMinho trying to pass while streaming mvs
@@MintyMinho hello Army :D
I'm sat in quarantine confused, guess whos just explained it better than anyone in 4 minutes! you're a life saver :)
Thanks. I appreciate your comment.
@@Freesciencelessons ♥️ ✊🏿
You sir, deserve a knighthood
The man, the myth, the legend itself..
Nerd_Y Boi himself*
how do you condense 2 hours learning into 4 minutes and even add some extra stuff!
A T303 because teachers give too many questions for us to answer
Teachers waffle sm sometimes and don’t tell you the specific parts that are relative to the specification and exam
@@Name7.62 ok undercover teacher
@@Name7.62 ik I'm late but that's why I'm here
@@Name7.62 Sorry mrs
your videos are great for people like me, who has had a substitute teacher in all sciences since year seven (I'm in year eleven now and has just gotten my first proper teacher)
damn, i get you
Literally what has happened to me! Just trying to learn the whole course over a weekend
I feel you
same to me but in math. My science teachers still can’t teach tho😹
you're in university now?
who else is here for gcse 2024?
You are an absolute legend! If I somehow (against all odds) manage to pass this biology test, it'll be a miracle, and it'll be mostly down to you thank you so much.
how did it go?
yea how did it go :O
it how go did?
how did it go?
how'd it go?
just did paper 1 today and after watching this video countless times over the last few months and finally understanding, it really helped in the exam! THANK YOU SIR
Someone give this man a Nobel peace prize 🙏🏼
I’ve never learned so much information that was so clear and concise in 4 minutes !!
you are a lifesaver tell me how I went from crying in a two-hour lesson because i didn't get it to learn it all in 4 mins. u deserve the world
Thanks for the comment. I'm glad that I could help.
This guy is ******* amazing he explains it so quickly an well. good job!
Literally watching this the night before the exam tomorrow biology paper 1!
@@matalikmalik she had finished before
@@abdulmajeedabdi9631 hahahaha
same. except its the morning of the exam :/
me too
Abdulmajeed Abdi 😂😂😂😂😂😂😂😂
its 5:30am and im binge watching these for my mock today :) my teacher didnt even teach me half this spec!! thank you
that’s exactly what i’m doing and it’s 5:30!
me too i have a bio mock tomorrow and i'm bingeing the whole of the paper 1 videos lol
The intro music is very calm and relaxing
Your videos are cooler than plants after transpiration
This is the GOAT for science lessons, saved lives of many students
shaun you are the one true legend of our times
this man is the reason im not bottom sets for science
Thanks alot you really am helping me and others with knowledge which we find hard to find these days
Thank you for all the assistance you’ve given me in my sciences! Chemistry on Thursday...
Finally finished all of the Bio paper 1 topics! Thanks sir :)
armwaaaryyy
Armyyy 💜
@@needzzz4873 how do you know they are an army?
your my saviour pls dont leave
Thank you have my bio paper 1 on Tuesday :)
2 days passes just like that I now have it in 1 hr and 37 m ☠️
@@neophote6626 Good luck and I hope you do well in your GCSE Exam, Inshallah!
@@neophote66269 months pass just like that you have now finished it💀
Are you stuck?
steps to being un-stuck in science
1.boot up youtube
2.type problem + free science lessons -----> pog ass life
That's epic
Works for me
3:41 EVERYONE for his one and only smile 😃😂
Biology exam tomorrow and this man is the only reason I’m gonna do well 😭
hello I am a student and at first I was a grade 5 in science since I started watching your videos I am a grade 7 in combined science
thats so sick!! do the teachers like teach in your school? cause in my school they sit around on their phones
lol same
Pro Beatz 1
wow I only started watching these a few months ago and I'm getting good scores in science in year 11, you must be on the way to an A* if you're watching in year 7/8. Keep it up bro.
Sitting gsces in a month.....wish me luck Sean!
Biology today 😬😬
thanking God for your existence
Great, informative video as always! :)
Translocation next?
Hi and thanks for the comment. You have to know hardly anything about translocation (essentially what it is) so I've included that in the video Plant Tissues.
Sheeesh! Nice tie, relevant to the topic as well.
Started revising in yr 11 i keep saying next week i will revise properly, procrastinating is real. 20 Mondays to go
i am in love with this man
Great video explanation! Keep up the good work guys!
this guy is a real help and life saver, thank you!!
this man is a ducking legend!
Really good explanation about the opening and closing of the stomata...Thnq sir
Clearly got it
awesome video sean
thanks for telling me how to dry my clothes quicker
The hero we all needed....
You are saving lives
Watching this the night before bio mock thanks shawn
you saved my life sir ly ty
Hello and thank you for these wonderful videos - just wondering when the plant closes it's stomata meaning it cannot photosynthesise Is that when the plant uses starch as the storage molecule as energy to make food etc.. ? Thank you
Yes if the plant cannot make glucose because photosynthesis is not active, then it will break down the starch stores, releasing glucose for respiration.
Freesciencelessons Thank you!!
I wish we could save comments, you asked a great question, there!
this is a really good question
Thank u so much for the wonderful video
It’s 3 am and I’ve got my GCSE biology paper 1 tomorrow! 🤬😢watching this really refreshed my memory
wait your aqa gcse?
mine is on Tuesday :( 😢
This guy gives me confidence
Yes yes yes thanks sooooo much. If it wasn’t for u I wouldn’t have got my 3** in science overall I had 6** 3As and 2 bs
You are literally a life saver a love you
biology in 5 days!! good luck
Sir, at 2:36 of your captivating science lesson what does that link to I’m generally confused does the stomata just naturally open up to carbons dioxide I would appreciate it if you replied thanks.
When light intensity increases, this causes the rate of photosynthesis to increase in the plant cells, including the guard cells, which control the size of the stomata. This increased rate of photosynthesis causes a series of reactions to take place in the guard cells which cause them to change their shape, opening the stomata.
Thank you so much your videos are literally the best I bought all your revision workbooks
your the best teacher ever sir Alhamdulillah
do you think they'll ask us the steps of the transpiration stream in the exam?
Possibly. It would make a good 4-5 mark question.
Freesciencelessons Okay thank you
mariyasuga FIRST LOVE🤭❤️
Thank you so much , your videos are super helpful ❤️
Honestly these comments bring me so much happiness 😭
Great video! I have a question. You said that the rate of transpiration increases in higher temperatures but then you said that in hot conditions, the stomata close to reduce water loss by transpiration. How does the rate of transpiration increase if the stomata are closed?
Plants cannot photosynthesise if their stomata are closed so there is a time when the temperature increases before the stomata close. During this time, there is a high rate of water loss by transpiration. However, once the stomata close, the rate of water loss falls.
@@Freesciencelessons Thank you!
Bro you are the best
Thanks, I appreciate your comment.
great video but i have a question.what is transpiration in a simple definition. I think it would be how water frm the plants go up through the stem by the xylem and into the atmosphere. is that right, sir?
Transpiration is the evaporation of water from the cell surfaces in the leaf and the diffusion of the water vapour out of the stomata.
is this a required practical topic?
Can u pls explain me how to get into triple science....I m really desperate to become a doctor....the whole GCSE system is new to me as I moved to uk 6months ago..will my dcp grade affect? What if I get really good marks in the assessment week but the dcp grade is low? Will I still get into triple science?.. thank you 🙏☺️
Saiabhijna Pendyala you don’t need triple science to become a doctor.
Saiabhijna Pendyala But if you really want to take it, in my school anyone could. But idk if this is different in other schools
Hi and sorry for the late reply. Please do not get hung up on getting into Triple Science. Medical schools do not look for triple science in their applications. All they look for are good grades. So aim for high levels in your GCSE Sciences (in either Triple or Combined Science). Personally, I think that many students who take Triple Science would get better grades if they had taken Combined Science as there is less content to learn. Good luck and I hope that you achieve your wish to become a doctor.
Trust me you don't want to do triple science. Trust me it's horrible and hard to understand since some A Level knowedge is added. Stay in Combined Science, you can do any science in A Level without Triple Science. If I were you I'd aim for a 6 and above
got the biology paper 1 year 10 mock in 3 weeks
ill update with my score
Go on
Thank you very much Sir
Thank u so much. U saved my life
Thank you for your vids.
Hi, I'm having a hard time understanding this. So, transpiration is the evaporation of water on the surface of the leaf right? As, leaf evaporates water, water vapour passes through tiny air spaces in the spongy mesophyll and out the stomatal, which cause water loss in the plant. The root hair cell transports water to xylem vessel cell to transport it to the rest of the plant to make up for water loss and for photosynthesis to occur. (Mineral ions - mg for chlorophyll too. Is this the transpiration stream?
hopefully thisll help me pass my mock 🙏🏻
How did it go?
thanks, your videos help a lot, sir...
Just an extra point on factors that affect transpiration: humidity, because if it's more humid there is a lower concentration gradient for diffusion.
He already mentioned dry conditions
hey sir! Do you have any tips for remembering the required practicals steps 1-6
Biology paper 1 tomorrow. Pray for me
GCSE 2025?
yess
Can you do translocation please? Great vids, thanks!
POV it’s T-13 hours until your gcse
Hiya will you be making a playlist ? For paper 2 of biology ? X
My guy I have a bio test soon that I’m freaking out but I’m fine now
Good. Don't panic. You'll be ok.
Thank you I’ve done it and I think it went well
@@jackjackson2764 what did u get?
@@jackjackson2764 what result u get?
He is a hero
Thank you, very helpful
Thank you so much :)
Im confused. how is 1:13 not the same step as 1:18 ??
Why does he never sit down😭 you deserve a break too sir
what about translocation
Love your vids
This guy sounds like a top bloke
How can I access all the videos for aqa paper 2, 4 and paper 6?
sir you are so helpful, better than chappel
Thanks. I appreciate your comment.
you said at 2:00 that the rate of transpiration is greater at higher temperatures
but then you said at 3:09 that the stomata close in hot conditions to reduce heat loss?
That's why the stomata close (I think I said "water loss).
Freesciencelessons yeh I think you did say water loss
he is actually talking about too high temperature
so does it start by water evaporating off the plant into the air
Is the the same or similar to the IGCSE course?
Am I right in saying that there is no transpiration required practical?
yep its not a practical rather a small part of the sec
yes
Tom Dixon rip that came today 😬
You mentioned how the stomata is closed during high temperatures. Surely during the summer photosynthesis can never occur as it is always hot and the plants will die?
No.
The stomata only opens for photosynethis to occur. When light intensity is high the guard cells allow the stomata to open so photosynethis can occur. There is a difference between humidity and light intensity. If the air is humid the stomata will close to reduce the water loss by evaporation, as if the air is too hot photosynethis won't occur as the enzymes in the plant will denature. Hope that clears it up :)
I was never taught this topic in school wtf?
it be like that sometimes y'know
@@alberthank7388 fr some teachers wack
Does water naturally diffuse wherever there is a lower concentration of water if there is a higher concentration where the water is present
yes
oh the memories💔
What happens if it is very hot and there is high light intensity? Does is open or close?
closes probably dude
for the GCSE, will we need to know it as palisade mesophyll or just as palisade?
You can just say mesophyll or spongy mesophyll but I would recommend looking at a mark scheme to clarify.
Great job
*** Outline how abscisic acid functions to stimulate the closure of stomata. Could you explain a little bit?
Can you do translocation as well??