SCERT X Biology Unit 1 NUTRITION # Class 3 # oxygen is liberated in photosynthesis

0:00 hello students welcome to our next class that is the third class in the first unit that is a nutrition so before entering into this class i have to recall what we have studied in the previous class isn't it in the second class we have learned mm-hmm a second class photosynthesis equation equation two summer next which is bruce lee experiment should danger in the next carbon dioxide is essential for photosynthesis process and a20 experimentation carbon dioxide

0:56 foreign so carbon the water is very essential for the photosynthesis process right

1:43 so next which you see lighten is the very very essential thing for the photosynthesis process so nani market experimentally so if photosynthesis process materially

2:47 light is very essential factor for the photosynthesis process so enlightenment dark area we could answer them a day first as we did in the previous experiment we are going to take a porter plant so it could have been a day what a practice kunta

3:44 foreign the leaves in the previous experiment in the same way we are going to discharge the leaves in this experiment too many previous class low carbon dioxide is essential for photosynthesis process law leaves in mutton just keeping that plant in the dark room for two to three days we just destructed all the leaves in the same way it could have experimented with two to three days like they were distracted

4:40 down that aniki say for example i'm covering this leaf up to here with the black paper so i could see black paper 30 complete the cover so this is the black pepper which i have covered the leaf so maybe the pineapple shape so shape cut if not you can directly cover this leaf with the the partial part of the leaf not the

5:37 so you just keep this whole setup in the sunlight for the two to four hours so randomly channeling this complete setup after two to four hours

7:41 light is very essential factor or material for the process of the photosynthesis in order to prepare the starch in the leaves or plants start and

8:32 we are going to test with the iodine chemical isn't it if there is starch of glucose present in the leaves it turns into blue black color this is also over so monkey releases water and here one more is left that the oxygen is liberated in the photosynthesis process so a chemical equation ah release a it would be productive gas and ac button already chemistry need not to say okay right let us see the next experiment that is the oxygen is being liberated in the photosynthesis process oxygen is liberated

9:31 we are going to take a beaker i'm just filling this weaker with the water three by fourth of water so eb system

11:14 so you just invert that funnel on the plant pieces which are which which already in the beaker so it currently dominates

12:23 we are going to take a test tube and which is going to be inserted on the stem of the whanau in the reverse order in the day he catches sorry line is not coming straightly don't worry we are understanding the concept that's it so we can accomplish already water nepali much foreign

13:08 yes you keep this entire experiment under the sunlight for two to four hours as we have did in the previous experiments in the moon the experimental product ended up completely you can observe the fine bubbles which are coming from the hydraulic and going up in the

15:08 there is no chance of escaping the air from this water isn't it you just insert your thumb thumb at the same time the closing test you become the closing closes so this is the right position so we are inserting thumb here [Music]

16:21 just that is the oxygen only so he experimented with intel day the gas which is liberated or released in the photosynthesis process is the oxygen tell us photosynthesis this is the experiment where you can see the oxygen is liberated or released in the photosynthesis process we are going to conduct an experiment to prove that the gas which is released in the photosynthesis process is the oxygen this experiment also known as the hydrola

18:41 is it clear okay right these are the experiment by using this equation we have uh did it isn't it first experimentally uh uh starch form in the leather iodine distribution so these are the experiments we should learn in the first unit so these are the very essential experiments in the point in the examination point of view isn't it experimental experiment

19:29 okay