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Russian
00:00:04
yes, maybe this is an album, this work may00:00:07
or may not be in the album according to your taste,00:00:09
ok, let's go last time, I'll00:00:12
talk about cells, now we'll step00:00:14
up a step and talk about tissues and00:00:17
organs, it's probably not very clear what00:00:21
tissues are,00:00:22
although in the past year, we00:00:25
talked a little about them if you remember, yes,00:00:27
but there was one, but it’s not like we00:00:30
’re going to talk about them much more now,00:00:33
a little more, yes, that means, first of all,00:00:36
let’s look at this quite00:00:37
understandable picture of what a plant looks like,00:00:41
organs of the plant, yes, then look00:00:43
Each plant has an organ that00:00:46
supplies it with water, how to give out which00:00:50
ninebot of its own, because the plants here have organs00:00:53
labeled which of them is supplied with water by the00:00:55
root, yes, the root supplies it perfectly with water,00:00:58
and there is an organ that00:01:03
photosynthesizes which trade00:01:06
is basically a leaf, but if the stem is young and00:01:08
green it it can also photosynthesize00:01:11
further, there are organs that are needed for00:01:13
reproduction, what are these flowers, from which00:01:17
fruits with seeds are then obtained, and there is an00:01:20
organ that performs the main supporting00:01:22
function, what yes is this a stem, what is a00:01:25
bud,00:01:27
this is such a young shoot, a young stem00:01:31
with leaves that simply appear from a00:01:33
small bud, but there are buds and those00:01:35
that give rise to flowers what00:01:37
is the name of the bud that you open00:01:38
will become a flower the flowers open riding00:01:43
the bud as if it is actually a00:01:46
bud it is the germ of the future the stems are00:01:49
all very small there then it00:01:51
opens and begins to grow yeah that00:01:55
means look firstly you00:02:02
have heard all these names but you you have to understand00:02:06
one thing, not all plants are structured this way,00:02:09
only the most advanced plants are just the00:02:13
ones that mostly surround us, but00:02:15
if you look at the moss, it won’t be there, no00:02:20
grass is structured like that, just look at00:02:23
what you call grass in the sense that what00:02:25
grows on the lawn has been specially selected for many years00:02:28
so as not to give the stem a00:02:30
big upwards, but if you go for onions, there is00:02:32
almost such grass with a cloth leaves on top, a00:02:34
stem card with a panicle, the lawns simply do00:02:37
n’t allow it to grow like that, it would not be so00:02:38
beautiful, it’s not wild grass, wild grass00:02:41
has a completely normal stem, that00:02:43
means you sleep, we are surrounded by plants00:02:46
that bloom, they are called flowering plants,00:02:48
they are the most complex in their structure, and00:02:50
that is, if you look at moss, or00:02:52
even more so at algae, there will not be00:02:54
most of it or all of it,00:02:57
for example, there will be no roots, there will00:02:59
definitely be no flowers no one except00:03:01
flowering plants has any flowers, a fir tree has no flowers, a fern has00:03:04
no flowers, kumu have no00:03:07
flowers, so this is the most difficult option, but for00:03:10
most of the year we will talk00:03:11
specifically about flowering plants, and then at the00:03:14
end of our course we will talk about what00:03:16
else there are, and so two words that will00:03:19
accompany us with the entire course that you00:03:22
need to remember and understand vegetative00:03:25
and generative, here are the words00:03:28
vegetative, if I’m talking about organs,00:03:31
know what it is needed for, see what it’s for,00:03:34
read it, and what is growth00:03:35
and development, see00:03:39
growth is when something that does, well,00:03:42
gets taller, more yes this is rose00:03:45
and development is when something makes you00:03:48
smarter, we are talking about people so flowers00:03:51
don’t become smarter development is when you00:03:53
acquire some new properties00:03:55
abilities traits00:03:57
yes something new acquire growth just00:04:00
become more development is acquiring some00:04:03
new ones then the ability to00:04:06
do this vegetative organs what organs are00:04:07
vegetative root stem leaf bud00:04:12
yes the plant needs them to get00:04:15
nutrients to grow and all that and00:04:17
there are generative organs here are the words 10 in00:04:24
English it actually means to grow00:04:26
developing well here is to increase and there is00:04:29
the word jennie reid who does not mean began00:04:31
to generate before the Russian word based on it00:04:37
is00:04:38
generate create in this way00:04:40
generative organs are needed for what yes it is00:04:45
very important for sexual reproduction this is00:04:47
because you all know very well what you00:04:50
can take, I hope you know,00:04:52
cut a poplar branch, stick it in the ground, a00:04:54
new poplar and many plants will grow or00:04:58
potatoes, for example, take a00:04:59
potato tuber, plant it and grow it,00:05:01
this is reproduction, but you actually get an00:05:04
exact copy, it’s actually a clone,00:05:07
but if you take a seed and grow a00:05:09
plant from it, but it won’t be the same, it00:05:12
will be the same as you from your parents,00:05:13
different from your ancestors I00:05:16
’ll write down a lot, let’s talk for now to get the basics,00:05:18
remember this next, another00:05:21
important thing to tell about plants, they00:05:23
have life forms, look, you00:05:25
all know them, grass, tree, bush, these are the three00:05:29
main life forms, what they are,00:05:32
and shrubs, this is a type like lingonberries and00:05:35
blueberries, these are not grass tree00:05:38
bush anything from this can have a00:05:40
flower and grass and trees and a bush can00:05:43
bring together a tulip is a grass it blooms a00:05:45
rosehip is a bush it blooms a00:05:48
linden tree it is a tree it blooms or an apple tree00:05:51
means look how to understand what is in front of00:05:53
you first look whether the upper parts all die off for the winter00:05:56
that above the ground if00:05:59
it dies off about a dandelion it dies off it means that it is00:06:01
grass and then if it doesn’t die off00:06:04
look at how many trunks00:06:05
if there are a lot then it’s a bush00:06:09
and if there is only one trunk then it’s a tree and if00:06:14
the upper part doesn’t die off then it’s00:06:17
a shrub the upper part doesn’t die off but it’s00:06:19
very small there are no straight trunks of00:06:21
any kind to be a shrub to the doctor the00:06:24
semi-shrub partially dies off it is important for you00:06:26
to distinguish between a00:06:27
tree a bush and a grass ok the plant is00:06:34
wildly diverse and we will talk00:06:41
a lot about what but first I’m talking about00:06:44
the cells I described to you what the plant looks like in general00:06:46
now let’s see how00:06:48
these cells are grouped and remember00:06:51
cells can specialize, what does it00:06:53
mean to specialize, to get00:06:58
some kind of profession, as it were, but for00:07:02
this they must do something with themselves,00:07:04
even somehow develop something that they then00:07:07
cannot do, if they do this, they cannot00:07:11
do the same thing cells are made as if00:07:14
while they are simple and they can divide,00:07:16
divide, yes, that is, and when a cell00:07:20
becomes like a buffet profession,00:07:22
it usually doesn’t divide at all, and so higher00:07:24
plants have tissues, by the way, the00:07:27
higher plant is everything except algae,00:07:29
probably just remember, they00:07:33
don’t have algae division into tissues, all the cells are00:07:34
approximately the same, then such a tissue00:07:37
is a bit of a heavy definition, but00:07:39
it is correct, this is a collection of cells and00:07:42
intercellular substance, that is, there are00:07:43
cells and between them there is some kind of thing, so00:07:46
all together these are cells, there00:07:48
may be water, there may be something something00:07:49
else, for example, their bones have00:07:52
cells and there are mineral substances,00:07:53
and there are more mineral substances in places,00:07:55
and this is together a tissue that is original in00:07:58
origin, that is, they have some kind of00:08:00
common cell cell in00:08:01
sensor structure, that is, what are they, what is the00:08:06
general structure, how are they the same?00:08:10
they have the same structure, they look00:08:15
the same, and in terms of functions, that is, what does it00:08:17
mean, the same in terms of functions, they do the00:08:21
same thing, well, they do one thing together,00:08:23
okay, so the plants will have five different00:08:31
tissues00:08:32
1 tissues are educational from the word00:08:35
education,00:08:36
but this is not about learning, but about what they00:08:41
form something - then these are very thin00:08:47
small cells they can be found at the00:08:51
tip of the stems at the tip of the root and sometimes00:08:53
in thickness and stems they are constantly dividing00:08:56
for which to increase the number of cells00:09:00
and grow for example look here00:09:03
these cells are located here they are00:09:06
thin cells at the top of the shoot00:09:11
they are needed for growth, the next integumentary tissues00:09:16
you have skin and in plants it happens or00:09:21
it seems or Koran to the skin thin bark00:09:25
thicker look let's take the stem,00:09:32
cut it and look at the top layer of00:09:37
cells and here there will be cells very tightly00:09:42
adjacent to each other, save why00:09:44
they are very tightly adjacent to each other friend00:09:46
to protect not to let various00:09:47
substances inside further,00:09:49
but nevertheless, plants already need to00:09:52
receive various gases, for example carbon00:09:54
dioxide, to absorb into themselves, so we00:09:57
must embrace that there00:10:00
must be pores and these are the00:10:03
pores and in addition many, for example, many00:10:09
leaves or the stems seem to be00:10:11
covered with shiny wax on top; eyelids are00:10:13
varnished; they saw and this is the wax, it’s00:10:16
called the cuticle; it’s just a layer of00:10:18
protective wax that these cells00:10:20
secrete; yes, there is a special00:10:26
spray for plants that increases00:10:28
this protection so that they shine more, and00:10:29
so it seems, both the bark and the main function00:10:32
protection00:10:35
main tissues00:10:37
main tissues, as you might guess,00:10:39
provide the basis for many parts of plants the00:10:43
main tissues are located inside00:10:45
these are all the main tissues inside the00:10:49
main tissue is usually large, loose00:10:53
cells that store00:10:57
nutrients, in addition, cells00:10:59
that photosynthesize also belong to the00:11:01
main tissues they can be found almost00:11:04
anywhere inside the body of a plant,00:11:09
mechanical tissues,00:11:11
as you can easily guess from the name,00:11:15
mechanical tissues should be what00:11:18
needs are00:11:20
mobile, no less mobile, look at00:11:26
their main features in the center, these00:11:28
pinkish purple ones are00:11:30
mechanical tissue, they have very thick00:11:32
shells, what shells do plants have,00:11:35
and yes how to take out which one is00:11:39
thick to be strong until the cell00:11:41
walls are very thick and they perform a00:11:43
supporting function00:11:44
very easily you all certainly00:11:47
felt the mechanical shoulders you know00:11:49
there is an apple there is a pear when you eat an apple it is00:11:52
so uniform and when you eat a pear it is00:11:55
soft from time to time as it crunches on00:11:57
the teeth these are mechanical cells in the00:11:59
pear, they are just small islands there,00:12:01
so hard that you can’t00:12:03
bite through them, they are initially strengthened with00:12:06
tissue like pears because00:12:08
they are no longer needed there culturally,00:12:10
but they remain there, that’s the type of thing and the00:12:15
conductive tissues of plants are very00:12:20
large, for example there to go to colleagues00:12:22
maybe 100 meters and you need to raise00:12:24
water from its root to its leaves at00:12:26
the top you need special vessels like00:12:29
a water supply they go in the stem called00:12:34
onions and wood remember the fairy tale it was a fox's hut that was00:12:37
icy the bunny's hut was deep00:12:40
but well this is like from the wood is such00:12:45
thin sections and I don’t remember exactly the ching,00:12:47
in my opinion it doesn’t quite mean the same thing00:12:49
because when we build00:12:51
and build from wood and lubava there’s00:12:53
a little hammer in it, just for now it means these are00:12:57
these tubes up and down the00:12:59
liquid goes up and down water comes with all sorts of00:13:03
salami from the root and down the leaves send00:13:06
water with sugar because they00:13:08
make sugar okay now let's see how00:13:13
they are distributed along the stem00:13:15
look this is the educational00:13:18
tissue where at what place of the root to at the00:13:24
tip of the root00:13:26
now look if we cut somewhere- then00:13:29
in the middle it00:13:33
is good to create a background like this if we cut00:13:37
somewhere in the middle then what kind of tissues we00:13:40
will see look on the outside will be00:13:43
and on the outside so that the integumentary bed is the00:13:47
skin, then most of the inside will be00:13:49
filled by the main one00:13:53
and the mechanical one simply cannot be00:13:55
distinguished here and these are the islands of00:13:58
conductive tissue now look here this is00:14:00
what the00:14:02
leaf looks like, these are the00:14:05
green cells, what is the00:14:08
main tissue that photosynthesizes the main tissue, the00:14:10
skin of the leaf, what is the integumentary tissue, these are the00:14:14
blue ones, these are the veins seen in the00:14:17
leaf, the veins are there, this is what tissue is the00:14:21
conductive veins, this is the transport00:14:24
system and look, this is the00:14:28
growth point, yes here is the very top part,00:14:31
no, this is not a flower, this button00:14:33
opens up, in fact, look here, they00:14:36
supply nutrients, which00:14:39
tissue conducts many cells, which00:14:42
tissue is green, the main one and the outside.00:14:47
educational tissue on a00:14:53
large preparation you can see something like this00:14:55
picture here, what kind of tissue is not here00:14:59
please look, yes because this is the00:15:07
middle of the stem it does not grow in trees there00:15:12
will certainly be educational tissue00:15:14
because the tree trunk grows00:15:17
upward at the top point to the width, but for00:15:20
example some kind of corn, which00:15:22
most likely is the degree, does not00:15:24
grow in width, it grows upward until00:15:28
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