[Music] so [Music] hi students welcome to baiju's this is 9th and 10th channel of it and you all are achievers and i'm your teacher ankita in today's class we'll be discussing about the plant tissue or i would say that we'll be mastering the plant issue in one shot we know that this is really very important from the exam point of view so we'll be looking into the chapter right of course this particular topic we will be discussing about the important key words important questions and how you can write the answer in the examination right so this is really very very important before we start our discussion i would request you to have your notebook and your pen so that you can note on all the important points that we'll be discussing and on that note let's get started but just one minute one more important thing that i need to tell you if you're watching this video for a very first time or if you're new to our channel take a moment and hit on the subscribe button to actually help us in growing our family apart from that it will be great for you so that you can get the quality education and with that let's get started we're talking about tissues now what are tissues now tissues are nothing but a group of cells right which have which have a similar shape and function and they act together to perform a very specific function and we call them as the tissues so over here we have one mark's definition for the tissues it's really very important so of course you can quickly take a screen shot of it when we talk about the tissues right we have divided them into two broad categories we have plant tissues and the animal tissue in plant tissues we have meristematic tissue and permanent tissue and in animals we have the epithelial connective tissue muscular and the nervous tissue in today's class we will be discussing about the plant tissue let's focus on that now when we talk about the plant issue as we have just discussed we can broadly divide them in the two different categories for estematic tissue and the permanent tissue first we'll be focusing on the meristematic tissue let's get started with it so again this is a really very important information we have over here you can take the screenshot of the slides that we have right basically these can act as your notes so that you can quickly revise during your examination we have all the important information which is needed over here we go now maurice demonic tissues are really very special type of tissues right they keep on dividing that's why we call them as the dividing tissues of the plant also apart from that they are responsible for the growth of a plant in a specific region very very important point about the meristematic tissues we will talk about the important characteristic features they are active they keep on dividing cells they have dense set of cytoplasm they have a prominent nucleus thin cell ball and they lack the vacuole these are the important characteristic features of these monostromatic tissue now let's move ahead and let's talk about the different types of meristematic tissues we have we have epical lateral and the infra calorie let's quickly discuss about each one of these individually the first one we are discussing is the apical meristem now when we talk about the location of it they are present in the shoot and the root effects at the tip of the shoot right if the plant is growing in this particular direction they will be there at the tip of the plant so that they can grow grow actually in the uh you know horizontal direction moving towards the up and of course in the roots also they're present at the tip of it then the important function of that they actually help in the extension of the shoots and the roots that's really very important function of them when we have the lateral meristem now they're present in the lateral in the stems and the roots right and they actually help in increasing the grit of the plant in this particular direction right over here horizontally actually help in increasing the grid that's really very important over here so this very important uh important thing for us to remember when we're discussing about the tissues is that we should remember their location as well as their function so that's done moving to the third type we have the intel carolee charismatic right the location of course present in the nodes and the internodes so over here we have the nodes right over here we have right and of course uh on from here we'll see the growth of the new branches new leaves all together so that's they are present there and of course the uh the important function of them is to help in the vertical elongation of the plant so we hear what we have is a very quick summary of the meristematic tissue and in the examination this comes for three marks now what uh the question can be describe about the monostematic tissue or write the important types of meristematic tissues along with their function so here you have the answer so i hope that you have noted this down right if you do this question you will be the champion in the examination right because now you're kind of uh you know you you kind of aware about each and everything about this particular question talking about the champions right i have a very interesting information for you we have buy juice scholarship test now this particular examination will give you a chance to meet the champions right of our indian cricket team yes so we know that t20 men's world cup is their aid australia and if you participate in baiju scholarship test you could get a chance to go to australia and watch the world cup live so interesting right what you have to do you just have to register yourself there's a test which is absolutely free you can write this test and of course you could win a chance so that's really really amazing apart from that you you will get a chance to go to australia there are other rewards also so what are you waiting for right there's a link in the description box below so you can click on that link and of course you can register yourself for the examination so keep that right in your notes now that you're done with this going back to our learning so many somatic issues is done and now we will be discussing about the permanent issue i'm sure you are kind of aware about what is the meaning of permanent right now the permanent issue are those when not these are the ones that not be dividing no dividing we can say right they will not be dividing this is important no dividing right and the meristematic tissue will undergo the differentiation and then only will have the permanent tissue so barista meristematic tissues are there right they will be differentiating they'll be taking up a very specific functions and once they take up their specific functions to perform they will be losing their ability to divide and then only will have the permanent issue that's we are clear right differentiation is again a very important one marks question so please make a note of it so now we have the permanent issue now the permanent issue again can be broadly divided into two different types we have simple permanent tissue and complex permanent tissue in simple permanent tissue will have similar types of cells this is important we'll have the similar types of cells in that we have three types we have parenchyma colon chyma and sclerenchyma in complex permanent tissue we will have different types of cells different types of cells will be coming together and they will be forming the complex permanent tissue in that we have two categories we can say two types we have xylem and we have phloem now that we are clear with this let's quickly discuss about the simple permanent issue in that for the first one we are discussing is the parenchyma our important characteristic features of the parenchyma that they are oval or they could be round also they have a very thin cell wall very thin cell wall right they have the small but dense nuclear this is important then of course they have a living protoplasm right they have living protoplasm retroplasm will have the living component which have which includes the nucleus and the cytoplasm and of course they have a lot of large intracellular species so this is really very important in terms of the parenchyma so this is very important that's the important characteristic features now let's talk about the location now they are present throughout the plants so everywhere in different different parts of the plant we will find the parenchyma now the function they perform the function and they provide the structural support that's a very important function and they plays a very important role in the storage of the materials so what we have over here is the quick summary of the parenchyma so quickly take a screenshot of it moving ahead we'll be discussing about two types we have chlorine chyma and we have erin kaima so let's talk about the chlorine chimera first i'm sure there's a lot of similarities with the word chlorophyll right now let's talk about the characteristic features of them they could be oval or round shape with the very thin cell wall they have a dense but small nucleus very similar to the parenchyma right they have a dense protoplasm and of course they have a good amount of chloroplast we know that chloroplast is called as a kitchen of the cell and chloroplasts have chlorophyll that actually help the plants to perform the photo synthesis that's by the name lauren kaima that's a very important note then let's talk about the erin kaima as the word air is there it is related to something with the floating of it we talk about the characteristic features they are oval round shape have a similar very thin cell wall dense but small nuclears they contain large air cavity and because there's a lot of larger cavity they actually help the plants to float especially the water plants like water lily right they actually can easily float on the water and of course we have the iron chymer tissue over there so this is really very important again what is the difference between these two that could be of two marks question that can be asked in the examination so please keep a note of this moving ahead to the next simple permanent issue what we have we have the colon chimera now let's quickly discuss about the characteristic features of them they are long and the living cells this is really important they're a little bit longer right and of course they're the living cells they have a thick wall big cell wall right they have in regular thickening at the walls we can see at the corners they have a little bit of thickening right they have less intracellular spaces and of course they have large intracellular space over here so of course when we talk about it now we will not be considering this point there are very less intracellular spaces this is really really very important over here as we can see now the location they're usually found in the climbers right now one of climbers over here we have an example those plant they'll climb that they're that take a support of any structure and of course they climb they found over there and they are really very special in providing the flexibility to the plants i'm sure you must have seen right during the straw you must have seen the plants moving like this they'll just not fly away right that's really very important kolankayama gives the flexibility to the plants and of course it provides a mechanical support also specifically if you're talking about it provides the flexibility to the tendril this is important you could quickly note this down so that's about the colon chyma so parenchyma and colon chimera both are living tissues now when i say that they're both are living tissues do we have something kind of dead tissue also let's find out right the next we have in the simple permanent tissue we have the sclerenchyma now the characteristic features of them are that they are long and narrow dead cells yes ah tissues can be dead also so in simple permanent tissue we have two we have parenchyme and colon gum which are living tissue sclero on the other side is a dead cells right they have basically the dead cells they're long and narrow and they're dead cells now they have a very thick covering of a chemical right of course that they have the lignin this is important right to their walls are being covered with the lignin and that's why we call them as thick lignified cell walls this is very very important or a very important characteristic feature of this clarion chimera and they have a very narrow human the location we talk about they're present in the hard coat of the seeds right i'm sure you must have seeds seen the seeds right of course we have this current crime over there then of course they're present in the vascular bundles also so of course when we talk about the uh vascular bundles we'll be quickly discussing in a minute so it's present there also the function comes that provides a mechanical strength right they make the seed coat hard and of course give the woody appearance this is really important when we talk about the seeds right when we talk about the walnut covering the coconut husk like the covering of the coconut that's made of the sphere and kaima right so you can find more examples of it and you can write in the comment section below when we talk about the spiren karma there are two different types we have the fibers and we have these sclerites so of course fibers of course we have it in the coconut husk right and of course we have in the vascular vascular bundles also and we have sclerites let's keep different types right of course the one example that i could uh now think of is they're present in the uh guava fruit right so you can do a little bit more research on that and you'll be so fascinated with this in interesting and super amazing information so with that we are kind of done with a simple permanent tissue it has three types parenchyma colon kaiman's clarion chyma and we are done with it now what are we moving ahead to the next important topic that is protective issue now this particular topic is a little bit confusing right uh so i would request you to focus really right very closely and we'll be focusing on we'll be learning this so we have protective tissue and it has three uh broad categories we have leaf epidermis root epidermis and the core so let's discuss about the leaf epidermis so leaf epidermis when we talk about what is the function of course the outermost layer over here we can see right so they're present on the epidermis right of course on the leaves very thin layer that is on top of it actually make sure it protects the leaves right of course we'll be looking into the functions of it so of course it's the outermost layer prevent the water loss prevent the mechanical damage and of course prevent the invasion of the parasites and of course it have the so once the stomatas are present over here they actually help in the exchange of the gases right and of course it actually help in the transpiration process also then when we talk about this stromat over here right over here from from here to here they actually help in the gaseous exchange and they regulate the water loss also there are two important points about the protective tissue especially the lip epidermis over here the functions where it is present over here and then of course about the stromata so please take a note of it all on this also we have a very very waxy coating layer which is called as a cuticle so you can note that also moving ahead to the root epidermis now of course when you talk about the roots they also have the epidermis and basically they also contain these small pure right root hairs these very thin root hairs now they actually help in increasing the surface area for the water absorption now the important role of these roots here is to help in the absorption of the water from the soil right and then when they absorb the water we're moving to the different parts so this is really very important over here we have the epidermis again it provides re as it is a protective tissue it is the outermost layer and it provides the protection to the plants right uh the species the other tissues and the other cells that we have inside apart from that so that's a role of the root epidermis moving to the third type which is kind of very confusing and again a two marks question comes on this particular topic is the cork cells now they are found in the woody stem and the old plants right old plants now of course they're made up of the protective tissue they reduce the water loss and prevents the mechanical injury so what happens the in the inside we have the newer tissues right and of course they get good amount of water and food but as they keep on growing right what happens they are being pushed away from the center and they move to the outside and as they move outside what happens of course they'll not be getting enough water in the food and eventually these cells will become dead and of course if they form the very you know very very rough and tough covering so over here this is important apart from that a very important one marks question that we have over here is a chemical that of course is this fibrin right in this basically make the cork cells impervious to water and gas basically there will be no loss of water again a very important point please take a note of this so with this we are kind of done with the protective tissues also now we'll be moving ahead to the complex permanent tissue but before that i want you to try this by joe's mini learning program that we have now with this particular program what you can do you can actually explore the buyers classes there are two teacher advantage you can pick the timing of your own classes what you have to do you just need to use the code yt first this by just mini learning program is now absolutely free you need to use the code yt first and the first 500 users can actually avail this program for free so don't wait after this class quickly use the code yt first and avail this in an amaze ning and i don't know you know you can actually explore these classes these are really very amazing classes that you can do or you know check them out after the class not now but after the class for sure now let's move ahead to the last permanent tissue right which permanent tissue the complex permanent tissue we have now the complex permanent tissue will have different types of cells coming together and they'll be forming a tissue so we have tissues that are made up of more than one type of cells occur as a complex permanent tissue and of course they are the conducting tissues of the plant we have two we have phloem and the xylem let's talk about each one of them we're starting with the xylem so xylem is a very special conducting tissue right and it is very very special because it actually help in carrying the water and minerals right from the roots to the different parts of the plant the flow in the xylem is in only in one particular direction that is from the bottom to the top we call it as a uni-directional this is important please note this down unidirectional right over here like this you can write now let's talk about the different components of it the first component we have is a tracheed right they have a very large dead cells over here we can see the end of the placement of the cells provide the continuous channel of course through these of course there's a continuous channel that we have and of course these walls are lignified and provide the mechanical support very interesting right then the next component we have is a vessel water will be flowing through these right and of course it's important so of course water and minerals will flow through these cells are placed end to end they also have a lignified cell walls right and of course they make sure to have the proper flow then we have parenchyma now as the parenchyma is there it will be storing the stars in the fat right and it asses for a small transportation distance library if there's a small distance it might help in the transportation and in the end we have the fiber remember the fiber from this clearance ima here we have now they're involved with the water transport and they are the one that provides the mechanical support so the four important components of xylem are trekkies vessels parenchyma and the fiber out of these four three are dead yes eats vessel and fibers are dead whereas only parenchyma is living so this is a very important information this is living right rest all are dead now let's talk about the phloem here we have now phloem plays a very important role in the transport of food the other one that actually help in the transport of food or the translocation of food and the special thing about phloem is that we will see that the molecules will move in both the direction from top to bottom and from bottom to the top and that's why in phloem we'll see the bi-directional flow this is important right in that we see the bi-directional flow now this is a very important information about it now let's talk about the chloem components here we have first we'll talk about the sieve tubes now they are the elongated cells right they're placed end-to-end and of course they make a tubular structure we can see over here now they have these sieves in between through which the molecules will move and they are the ones that actually help in the transportation of sugar and the nutrient then we have the companion cells which is very next to the sieve tubes they're closely associated with the sieve tubes and they control the activities also of the sieve tubes then we have parenchyma as of course it plays a very important role in the storage of the food like starch and of course we have the fibers that provide the mechanical support now over here in the phloem we have sieve tubes companion cells and parenchyma these three are living whereas fiber is non-living kind of opposite to the xylem right so we have discussed about the xylem and of course about the phloem with that i think we can conclude our plant tissue both the xylem and the phloem are really very important and in the examination a question can come on the difference between the xylem and the lawyer so please take a note of it with this i would say we are at the end and before we end our session i would request you to join our telegram group if you haven't joined our group already now we have the telegram community where of course we post the session pdfs session notes session updates hover question and so much more so if you haven't joined this amazing community of us you can click in the link which is in the description box below and you can be a part of a family too with that i would end my session you know that we've got you covered and don't forget to hit the like button for the video share 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