Full transcript of “NUTRITION CHAPTER-1 CLASS-2|| SCERT X Biology for TS and AP|| mohl's half leaf experiment||Prestly”. Click a timestamp to open the video at that moment. Need another video? Use the YouTube transcript generator.
0:25 topics isn't it so first class line chapter sorry so that kind of nutrition is known as autotrophic nutrition and the second kind of nutritionism heterotrophic nutrition so heterotrophic nutrition and already through summer
1:13 so this kind of nutrition is known as a heterotrophic nutrition next already we have seen in the autotrophic notation that is a photosynthesis process so this is a very vital and very very important process in the world which is going to release the oxygen into the atmosphere through this process only by the plants so photosynthesize
2:25 we have already seen the definition of the photosynthesis in the class one let us see in detail about the photosynthesis in the class two and uh some kind of relevant experiment which and it will be stored in the form of a starch
3:18 so what are the materials required to do photosynthesis for the plants so these are called as the factors or materials required for the preparation of the idli in the same way photosynthesis materials photosynthesis then what are the materials or what are the factors required for the photosynthesis process let us see so in japan already green color plants see
5:22 are these kundalini do you know the water formula yes h2o h2o next sunlight is what does um
6:19 is a special pigment present in the leaves of the plant that is called as a chlorophyll chlorophyll and a20 so these are all the required factors to do the photosynthesis process in the plants photosynthesis process material carbon dioxide carbon dioxide sunlight
7:26 so these are the required factors for the photosynthesis so then they get already chlorophyll in the in the presence of sunlight sunlight starch the food material the simple form of the starch is the glucose you will be very familiar you are very familiar with the carbon dioxide and h2o formulas you just need to remember only one formula of one substance here the glucose that is c6h12o6 this is the formula of the
9:41 carbon dioxide water in the presence of sunlight by in the chlorophyll so these plants are going to synthesize glucose at the same time they release the oxygen as well as a water this is a photosynthesis equation which is put forth by the the great scientist one you have to understand this uh equation
10:28 and you have to buy it okay now so you just learn the formula of the glucose that's it so c6h12o6 and the rest of the all the things are the older one which you have already learned in the previous classes at the same time oxygen this is the equation of the photosynthesis which is proposed by the van l scientist
11:16 okay then let us see the next topic so did you understand the photosynthesis equation and you should very familiar with the equation of the photosynthesis then only you can understand the next rest of the experiments let us see the prisley experiment presley so presley and the scientist name is a great scientist so experimentation experiment so experimenting today any organism in the world they require
12:03 something which is very essential from the air in order to survival and age not so this is the belcher and he inserted a burning candle in the bell jar so belgian launcher sunday okay burning
12:50 candling in situations experiment again so in the bell jar so inserted again burning candle as well as a mouse so okay so
13:56 so this is the first and this is the second and this one is a third so
14:57 thing which is present in the air which is taken by the candle and the wrath is replaced by the mint plantation so that they are alive in the belgian so ancient belgium under 20 candles that means the oxygen is liberated from the plants in order to successful survival of the other organisms
16:21 just before going to the next experiment we'll just recall the equation of the photosynthesis isn't it so if you recall that uh what we are going to learn in the next experiment we'll see that so this will recall the photosynthesis equation so what do we need for the photosynthesis we need carbon dioxide isn't it and what do we need we need water what is going to be produced in the photosynthesis process photosynthesis
17:24 so even the experiment we are going to see in the next class i mean next few after few minutes okay so let us see what is the first thing here we need carbon dioxide is essential for photosynthesis so what is essential for photosynthesis carbon dioxide is essential this is proposed by moles moles and a scientist a photosynthesis process carbon dioxide compulsory collection so
18:09 that this experiment also known as moles half leaf experiment the name moles half leaf experimental half leaf experimental next okay first we are going to take a potted plant
18:54 photosynthesis so it is not possible to remove the starch by using our hands from the leaves isn't it so then what to do in chai latte you just kept this potted plant in the dark for two
19:49 these my hands in the center the leaves of the plants are empty so it could leave some water chemistry dnt removal a planter which is already destructed by keeping it in the dark room for two to three days and now i selected a long narrow leaf from the plant so i'm not
20:37 detaching this leaf from the plant so then it is and here uh in other hand so what i so i took a wipe the mouth bottle so this is also this should be transparent so you bought it for permanganate sorry potassium hydroxide potassium hydroxian
21:25 so this is the potassium hydroxide which i put into the bottle
22:13 we are going to insert this leaf into the bottle through that split is it it says split cockpit just i am going to insert this half of the leaf here observe this i'm go i'm using the word half of the leaf into the bottle so this is the bottle and split car through the split work i am inserting the half of the leaf into the bottle so where already i have put the koh solution into the bottle so this is the kov solution and i'm just
22:59 keeping this whole experiment in the sunlight uh for three to four hours so in just nano experimentation has a great characteristic of absorption of the carbon dioxide from the from its surroundings
24:02 okay which is present outside of the bottle so it's going to get all the materials which are required for the photosynthesis process not only this portion even the portion which is inside the bottle also gets the water from the plant so local only twenty portion could have water low polluted portion and it's going to get the carbon dioxide from the atmosphere this is a very important point here so emotionally potentially carbon dioxide split
25:15 the half leaf part which is inside the bottle it doesn't get the carbon dioxide as the koh absorbed the whole carbon dioxide which is present inside the bottle so it doesn't get the carbon dioxide you just detach the leaf from the plant
26:01 so already we have seen in the first class how we are going to uh test the starch presence by using the iodine solution isn't it so same other process a half leaf which is present outside of the bottle it turns into blue black color so this is the part which is outside of the bottle it turns into the blue black color so as the starch is present outside of the bottle so it becomes blue black color blue black color look market
27:00 so this is the experiment uh which is uh put forth by the moles the great scientists
29:24 when you're connecting this half-life experiments what are the precautions you are going to take so e experiment is half-life experimental identity carbon dioxide is essential for photosynthesis and it would be experimental s the carbon dioxide which is taken which is absorbed by the kvh again it will be taken back by the leaf
30:21 is equation 90 just to carbon dioxide water randu kuda in the presence of sunlight sunlight adverse sunlight chlorophyll glucose means
31:21 just open your book and go through all these things once okay
