To prove that chlorophyll is necessary for photosynthesis |Life processes(part 3) | RooseTube

....this vide lecture is an experiment to prove that chlorophyll is a necessary factor for phototsynthesis.
....it also gives a brief detail of Starch Test.
....link to part 2(imp. Of life Processes & nutrition in plants) : • Importance of Life Pro...
....link to part 4(CO2 exp.): • To prove that CO2 is n...

[@tarasingh1689]

Good explanation

[@kingbeastko761]

Thanks a lot...Due to this video I am completely understood it ....Thank you

[@anikg0104]

Can i know why is the Plant kept for 3 days in dark(to consume all the starch present in the leaf) & again kept for 6hrs in sunlight, if it is to gain starch then why was it kept in the dark

[@roosedhamija588]

Hi Aniruddha. Thanks for showing interest. The destarching step in this experiment is done so that the previously present starch should not interfere with the other constant parameters or during the observations. And the experiment is then done under controlled conditions of sunlight, CO2 and water..

[@vivekrajrider9173]

Bhai humko bhi yahi doubt tha bhai .... Thanks bhai tera comment dekh kar khushi hui aur reply dekhkar maza aa gya

[@deepantirani886]

👌👌very nice

[@jayabhansali885]

Thank you for such good and brief explanation...

[@utkarshbhatt3904]

Maam what should be the colour of the alcohol solution when chlorophyll is dissolved into it ? Should it be green

[@roosetube4101]

since the pigment is very less, so alcohol color will just change slightly to pale side.

[@kalpanashakya3900]

Is it pale greenish ma'am?

[@urmah7381]

Alcohol solution will turn green because chlorophyll gets dissolved in it

[@kalpanashakya3900]

@@urmah7381 Thanks ma'am that you replied. It means a lot.

[@urmah7381]

Thank you ...this was so helpful it is explained properly 😊

[@nandish2667]

Thank mam . I have some doubts regarding to this but now doubts about this act. is clear . SO THANK YOU MAM

[@yashvigupta4282]

Thanks a lot

[@elonmusk2908]

Thank you miss for clearing my doubt.

[@mehleopoldine6738]

Thanks for clearing my doubt

[@jeetendrapratap2577]

That why should we keep the pot in the sunlight for 6 hours

[@roosetube4101]

This is an appropriate time duration in which the chlorophyll containing parts of the leaf with trap sunlight to synthesise Starch and then we can do the Iodine test to test which parts of the leaf( green or yellow) have Starch

[@ajaykumarajay-cb7wi]

thanku mam your videois really helping me

[@rekhasoni2551]

Ma'am thank you so much for this video...... I saw many videos but none if them helped me and this video cleared my all doubts😄😄😄😄😄😇😇😇......... Subscribed😄and you really deserve more subscribers I see😊

[@kunalsharma228]

Thanku ma'am your video was very helpful

[@everythinkispossible90]

bahut mast tha yr

[@naveenjyoti1188]

thanx mam really helpful for me and very nice explanation keep adding more videos of this chapter on your channel in hindi also

[@roosetube4101]

Naveen Jyoti Thank you . I‘ll upload a few more videos on Life Processes( aerobic & Anaerobic respiration ) this week. Please stay updated by subscribing this channel .

[@dhruvilrabadiya6926]

Lodo

[@ruzainpatel5993]

Well done.

[@totalfun6713]

Op explained and your voice is very nice

[@anjalidass7314]

Thank you ..this video really helped me get through my doubts...😁😁😁😁

[@roosetube4101]

anjali Dass . Good to know. Please feel free to ask any related questions.

[@reshmasultana6313]

Thank you so much mam.....

[@flameytgamer6147]

Awesome explanation ma'am....

[@sujeetkumarjha225]

Very well explanation in short time ....👌👌👌👌👌

[@shreeshakr8735]

Super

[@tinashibinara2699]

Thanks this was really helpful ☺️

[@rameshchandjain83]

Thanks it helped a lot...👍👍👍👍

[@umeshsahu116]

Splendid explanation

[@mohamadalhalabi397]

Clear explanation

[@Cuties-623]

thanks maam

[@vlikhita8581]

thank u so much mam . this video helps me a lot .

[@vivekrajrider9173]

Mam make a video on carbon dioxide is necessary for photosynthesis

[@roosetube4101]

Vivek Raj Rider It’s already there on RooseTube. Please find the link for the same. (kzbin.info/www/bejne/fZrPeXapmNGUf5I)

[@vivekananddr1289]

Thank you Ma'am for clearing my doubts about this avtivity

[@gleenbadesha8100]

appreciate it

[@nishalm6345]

thankuuu mam keep doing this....very useful

[@kanchanverma6720]

Good job mam👍👍👍

[@roosedhamija588]

Thanks Kanchan Verma

[@aanchalkumari5406]

Thanku for this video

[@invisibleworld6715]

Wonderful

[@sanchitjoshi7137]

Execellent video....👍👍

[@abhishekaanilrollno2187]

Thanku so much

[@gurleensidhu2752]

Thnqs mam

[@kashikuldeep6097]

Thank you so much mam for this video . This video cleared all my doubts regarding starch test . Your explanation was too good .

[@dime3868]

Do you mean that starch is only found in chlorophyll region of the leaf and not anywhere else?

[@roosetube4101]

Yes, only the region of leaf containing chlorophyll pigment can trap sunlight to produce starch, in short can do photosynthesis. That's what is proved here in the experiment. Should you have any other questions or arguments please don't hesitate to ask.

[@dime3868]

RooseTube I asked if the non green parts ever STORE starch produced by green parts? Do you know if this happens?

[@roosetube4101]

@@dime3868 if you are asking about leaf only, then only chlorophyll regions produce and store starch (non green parts of the leaf can't store starch) but there are some storage tissues(non green) in plants like tubers, (potato , sweet potato) and roots of the plants, where a plastid called amyloplast is present, which also produces and stores starch. Hope this clarifies your doubt to some extent.If you still have any questions, please feel free to ask. Also, your questions are very stimulating, and helping me to learn more out plant physiology. Thanks

[@dime3868]

RooseTube thank you for the answer and for the compliment. I will stick to your channel. You are good at explaining the 'why part' behind a thing in your videos. Which science guide book (cbse10) would you recommend for practicing topic wise questions?

[@roosedhamija588]

@@dime3868 practice last year paper(one is uploaded with answer key on RooseTube)

[@nakshbhonsle5688]

Thank u soo much mam.....

[@ArunKumar-pt4rf]

👌👌👌

[@naveenjyoti1188]

Mam please upload full video on respiration of class 10 NCERT

[@uzmakhan9591]

Then what is the importance of yellow area if it doesn’t contain starch

[@roosetube4101]

how will you compare the results, if you don't have an area which will be unaffected by iodine?

[@yashwantsingh3341]

Thank you mam😊

[@SantoshKumar-qe4yl]

Thanks mam it really work

[@SoniSingh-wy9jv]

can we take green leaf instead of taking variegated leaf?🤔....

[@roosetube4101]

Soni Singh how will you compare then that iodine reacts differently with chlorophyll and non chlorophyll containing regions, under same conditions?

[@SoniSingh-wy9jv]

Ok,Okkkk now I understand........ Thanx😊😊😊

[@artisticlane-]

Thanks

[@beenayadav4147]

Thank you mam

[@NawabAli-rt4se]

Thnx mam

[@ruthchiji]

If anyone sees this comment please answer my question 1. Why does the plant have to be de-starched and then exposed to light again? 2. Why is a variegated leaf used?

[@roosetube4101]

I will answer in reverse order. 2. We need to compare the plants response to sunlight at green area containing chlorophyll and yellow area without chlorophyll. Therefore variegated leaf 1. Any experiment is always done in controlled conditions. So we first make the plant utilise all its previous food/ starch by keeping it in dark room. And then we start the test fresh. So now we could fix the duration of sunlight and the time for photosynthesis and hence the time to synthesise starch for every part of the plant equally. In scientific terms we defined the “constants” of this experiment as duration of sunlight, location, water, CO2 content , soil and the “variable” is just one presence or absence of chlorophyll. I hope this will help!

[@ruthchiji]

Yes! Thank You😂😂

[@ruthchiji]

@@roosetube4101 Do you have a video on the efficiency of CO2 for photosynthesis?

[@roosetube4101]

@@ruthchiji I have one which tells that CO2 is necessary for photosynthesis, if that’s what you need. kzbin.info/www/bejne/fZrPeXapmNGUf5I

[@jackulinesagayaraj3713]

Thank you! It was really helpful for me....

[@tarasingh1689]

Hi

[@prachisingh3595]

Mam when we kept then plant in sunlight after destarching it then plant will again get the starch due to the photosynthesis so why we r destarching the plant

[@shootingstar8271]

Thank you

[@lyricsphysics9250]

It wud be better if it was louder

[@roosetube4101]

LYRICS PHYSICS Thanks for the feedback. I’ll take note of it.

[@neelakandan687]

We have to mark the Green Acres and we have to trace them in a sheet of a paper..

[@roosetube4101]

NO, you will have an idea of difference in colour shades as you will progress in the experiment.

[@neelakandan687]

In ncert science textbook.... Had given...

[@bhargavjs]

Thanks it is important for board exm

[@roosetube4101]

Bhargav jyoti Saikia in board exams u might be asked some conceptual questions based on this topic, like why the beaker containing alcohol is not directly kept on flame, or why do we boil the leaf, or what is the role of iodine and what colour appears after putting the iodine solution on chlorophyll contains section of leaf. Or, it could be a part of objective question, and u’ll have to pick the right sequence of the test. For reference purpose , I am attaching a link of a solved 10 board exam biology paper. kzbin.info/www/bejne/haDFm2mbd9aGnKM kzbin.info/www/bejne/hWa0hayjicxnrLM

[@informationsite1181]

@@roosetube4101 hhvu

[@vaibhavganthade8980]

Tq

[@s.lalkrishnaadvani2243]

Tnq

[@premaverma2791]

Why we pour alcohol pls tell

[@roosetube4101]

because boiling in alcohol breaks the chlorophyll pigment, decolorising the leaf, so we can then see the color change easily with iodine solution.

[@vlikhita8581]

tq mam

[@HIMANSHU-yl7yq]

Mam why you don't post videos now

[@DeepDeep-wb8uf]

Thanks mam but I have a question regarding this the ques. is that if we boil the leaf the starch present in the leaf get removed fully in the alcohol and the leaf get destarched , but when we put some drops of iodine on it, its colour become blue-black at the place where the starch is present , but we have been removed all the starch , now, how the leaf become blue-black ?

[@DeepDeep-wb8uf]

Mam please rply me fastly

[@DeepDeep-wb8uf]

Mam please ans.

[@DeepDeep-wb8uf]

Mam please reply

[@DeepDeep-wb8uf]

Its urgent

[@geetammishra8077]

Was really a helpful vdo..🤗

[@nidhisharma2555]

Mam.. If starch got consumed before then how iodine solution turned the leaf blue??

[@mohamadalhalabi397]

since it was put under light for 6 hours 2:00

[@nidhisharma2555]

@@mohamadalhalabi397 hmm Tnx... I got it😅

[@mohamadalhalabi397]

Np

[@rajday4507]

Hello mem If u make video in hindi language too .. then I'm sure that u will definitely achieve more Views and more Subscribers

[@roosetube4101]

Raj Day thank you very much for the suggestion. I will definitely consider that in my upcoming videos.😊

[@innu123ful]

@@roosetube4101 no need mam...i will find it difficult...i alwys find this problem...many of them are in hindi and we those who dont know hindi fi d it really difficult

[@dilipkotecha3510]

2 days and not 3 days

[@roosetube4101]

the duration is not strictly 2 or 3 days Sir. it is influenced by various factors.

[@arianaroy6656]

😂

[@vivekrajrider9173]

Bhaag fatherjaat ...itna ache explaination me aur kya chahiye

[@dr.sangeeta54]

😂🤣

[@Lofimastersongs12]

Mam, the area where starch is used is yellow in colour?

[@roosetube4101]

Dipak jesthi starch is synthesised by green parts of leaf by the process of photosynthesis, and Iodine is used to test the presence of Starch in the leaf , as Iodine reacts with starch to form a complex which is blue black in colour. I suggest to watch the video again, pause it on each step and draw a flow chart on notebook step by step and this way you will understand the process better

[@rajatsinha1534]

Why chlorophyll is removed before starch test?

[@roosetube4101]

To decolorise the leaf, so that one could see the change in color clearly on putting Iodine solution.

[@kuldipverma6885]

Same doubt. Now cleared. Thanks

[@rajatsinha1534]

@@roosetube4101 ok, thanks mam

[@bhavyapradhan3580]

But maam we have removed starch first by putting in dark room then we have removed chlorophyll too . So how starch can present now?

[@roosetube4101]

Bhavya Pradhan after removing the previously present starch completely, the plant is again brought to sunlight , and then after 6 hours of sunlight the test begins on the leaf.

[@bhavyapradhan3580]

@@roosetube4101 ok

[@nurulislamtalukder925]

Thank you. It was really helpful !

[@monishag.s.571]

Ma'am should we use only iodine or any other solution

[@roosetube4101]

Monisha G. S. This is a very simple test, only Iodine is sufficient. Although sometimes we don’t see the result as clearly as it is known theoretically.

[@mshashank9575]

what happen to the colour of solution

[@baljeetkaursaggu468]

It turned green because chlorophyll got dissolved in it

[@vishnupratap2157]

Gud mam mere boards hai 2020 mai thnx mam

[@roosetube4101]

Vishnu Pratap All the Best. Persistence and Hard Work always pays off.

[@vishnupratap2157]

@@roosetube4101 thnx mam

[@souvikbeats8369]

3:42 Wait a minute! What I haven't understood is after you have already removed all chlorophyll by boiling it with alcohol, then how come in the very next image after this, green patches can be seen? The entire colour must be pale

[@manjulach1261]

Variegated means??

[@roosetube4101]

Manjula ch It means leaf has more than one colour in it

[@akshatsingh7286]

DPS?

[@adyashadas8532]

Ma'am why did we expose it to sunlight again

[@roosetube4101]

Adyasha Das because we want plant to synthesise starch in the controlled conditions that we are providing, and then we test which parts of leaf ( green or yellow) have synthesised starch using Iodine test.

[@blackheartgamer9773]

Mam do you know hindi if yes please speak in hindi as I not know hindi 😂😂😂😂😂😂😂😂😂🥰😂🥰🥰🥰😂😂😂😂😂😂😂

[@XD-vl8hb]

Kya beh??

[@gleenbadesha8100]

please provide pdf or link for diagrams

[@roosetube4101]

Gleen Badesha hopefully you will get all the pictures on google images....just enter the right keyword.

[@shubhisen3639]

Created well. Thank you so much! Hit the like button if it helped you too

[@suryanshraj3827]

Miss can i write the experiment in my own words rather than copying it from ncert ???

[@roosetube4101]

suryansh raj definitely! Nothing more expressive than that.

[@prabhakarprayag7131]

Mam please tell Important diagrams of life process lesson

[@roosetube4101]

Prabhakar Prayag ...opening and closing of stomata pore, step wise diagrams of nutrition in Amoeba, diagram of heart, human digestive system, excretory system, respiratory system... rather all the diagrams in all the systems of life processes are important, and are very frequency asked to draw and label, or just label , in terminal as well as board exams.

[@roosetube4101]

Prabhakar Prayag this is the link to one biology board exam paper and it’s answer key(kzbin.info/www/bejne/haDFm2mbd9aGnKM). Hope this will help you.

[@naimishdadheech]

Not good. Confused me very much. You must teach in a simple way so that every body could understand.

[@dineshkumarbhalotia2058]

Mam why we remove chlorophyll

[@roosetube4101]

Because green colour of chlorophyll could interfere with blue black colouring test of Iodine solution on the leaf. With dark green colour present it’s hard to observe if the leaf has changed colour on adding Iodine.

[@jatin5027]

What will the colour of the solution of alcohol after boiling??

[@roosetube4101]

pale

[@mshashank9575]

what will be the colour of the solution

[@roosetube4101]

M Shashank . So the section where starch is present, iodine solution turns to blue -black ( forming a complex with starch), while the section where there is no starch, the iodine drop will retain its orangish colour...and no colour change is seen.

[@dime3868]

green

[@dime3868]

RooseTube it will be green.. he is asking bout the color or alcohol solution

[@gauravpandey3639]

Why leaf is kept in alohol

[@roosetube4101]

Gaurav Pandey . The leaf is boiled in alcohol to remove the green pigment , chlorophyll. So that the color change is distinctly visible at the end of the test.

[@naveenjyoti1188]

Upload soon and quickly

[@roosetube4101]

Naveen Jyoti kzbin.info/www/bejne/d4HKqaChoJmAY68. This is the link to my recently uploaded lecture on respiration. U should subscribe the channel and click the bell icon to get the notifications for the uploads.

[@theshubhamahirwar]

In short Leaf ki jaan le li

[@roosetube4101]

Shubham Ahirwar Actually True😊

[@harshrolln.o295]

Jb alcohol se saara chlorophyll nikl Gaya toh phir Aadhe leaf MEI kaise reh gya

[@roosetube4101]

Insane Gamer only the green patches of the leaf had the chlorophyll which was also later removed after boiling in alcohol, to test that which patch of the leaf was successful in synthesising the starch.

[@navneetkumar3841]

hindi m bol na....english m to book m hi likha hai

[@NikhilSingh-rk8pf]

🐱Hindi ke exam me science

[@willwym]

What is this. Was it made on fucking PowerPoint

[@harshitgaur2780]

Hu

[@sindhusuresh2925]

Nice explanation

[@naveensundar4765]

Can i know why is the Plant kept for 3 days in dark(to consume all the starch present in the leaf) & again kept for 6hrs in sunlight, if it is to gain starch then why was it kept in the dark

[@winny6167]

same doubt

[@roosetube4101]

Naveen Sundar we are doing this experiment to test if chlorophyll is needed for photosynthesis or not. we need to remove all the previously present starch, So that we could validate the synthesis of starch in green and yellow part of the leaf during the experimental 6 hours of sunlight. In layman’s terms, to get the precision and authentic proof of starch synthesis in only the green portions of the leaf.

[@naveensundar4765]

@@roosetube4101 If only the green part can do photosynthesis, is the other colored parts dead?

[@16_kumaripriya32]

Thanks mam

[@anandu5820]

👌👌👌

[@geraltofrivia2206]

kzbin.info/www/bejne/raCUh6iieJJ7f7c

[@harshitgaur2780]

Hu

[@aryanupadhyay97]

Nice explanation

[@kashikuldeep6097]

good explanation