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мектеп

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mekteponlinebiologiya

00:00:04

good afternoon, guys, we are continuing with you

00:00:08

a series of programs and a series of conversations about the

00:00:12

excretory system about how important it is

00:00:16

to remove breakdown products, metabolic products

00:00:20

from organisms, this applies to absolutely

00:00:22

all organisms, today we will

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talk about what

00:00:27

excretory features exist in a plant, because

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plants are also living organisms and

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as a result of their vital activity,

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unnecessary substances accumulate, toxins and excess salts,

00:00:38

excess water, all this will need to be removed,

00:00:41

so let's draw a plant in the form of a

00:00:45

flower so that we know exactly what we are

00:00:48

talking about plants;

00:00:50

however, if animal organisms have

00:00:54

specialized organs or even entire

00:00:57

excretory systems, then plants have

00:01:01

such separate There are no special organs,

00:01:03

but they have excretory tissue.

00:01:05

Amazing tissue is the kind of tissue

00:01:07

that only exists in plants. It

00:01:09

produces something. So

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let’s first talk about

00:01:14

how a plant gets rid of

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what it no longer needs.

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Removal of harmful substances

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may be involved in the removal process. in

00:01:38

principle, many cells of a

00:01:40

plant organism, let's take a

00:01:42

leaf, a leaf is also involved in many

00:01:45

processes, including removal. One of the

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most important processes that occur in

00:01:52

green leaves of green plants is

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photosynthesis,

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carbon dioxide is absorbed, but this is how

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unnecessary substance is removed oxygen for

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oxygen is necessary for respiration and

00:02:04

plants like all living organisms also

00:02:07

breathe using oxygen and in exchange

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removes carbon dioxide, you say, well, is it

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possible to somehow combine these

00:02:18

processes no, these are completely different

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opposite processes, so everything

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goes according to its own scenario, in

00:02:25

addition, it can accumulate in the leaves

00:02:28

in the plant, it can accumulate excess water

00:02:31

and species,

00:02:34

some types of plants can remove it

00:02:36

through special large stomata and you could

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observe this phenomenon when

00:02:43

water droplets are formed directly from this

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process is called mutation mutation

00:02:56

also it depends on what

00:03:00

soils the plant grows in what climate

00:03:03

if the climate is very humid then of course it

00:03:05

accumulates excess water is not needed,

00:03:07

it is removed, but it happens that

00:03:10

the soil may be unnecessary for salt salime

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and then these purposes will be

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produced and removed through

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special glands, that is, in some

00:03:21

plants, glands that will remove

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excess salt,

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special attention would like to talk about

00:03:29

such a phenomenon as leaf fall we

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we observe it in our area before the tree

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loses its leaves, from these leaves

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there is an outflow of the necessary substances that

00:03:49

the plant will still need, but the leaf is no longer

00:03:53

needed, it will fall in this way, there

00:03:56

will also be a kind of removal of what is not

00:03:59

needed, in addition to that, plants can

00:04:03

emit not just harmful substances

00:04:05

that I they are needed, they can generally

00:04:07

secrete specific substances that

00:04:10

you can even use or protect,

00:04:12

well, for example, let's talk about nectaries, nectaries, nectaries,

00:04:19

nectaries are just a type of

00:04:21

excretory tissue when

00:04:23

some very sweet substance is formed to

00:04:26

attract insects, insects, butterflies,

00:04:29

for example, sit on a flower, drink

00:04:32

nectar,

00:04:33

and this time, on its paws or

00:04:35

abdomens, it brings the necessary pollen for

00:04:38

pollination and prolongation of the genus of flowers; there are

00:04:42

some glands that can

00:04:47

produce some kind of odorous substance

00:04:50

for repelling;

00:04:54

essential oils and substances are produced that can

00:04:57

repel enemies with their smell

00:04:59

and can also attract in order to

00:05:05

-the insects smelled the smell and

00:05:09

also flew in for the purpose of pollination. Well, there are

00:05:13

resin passages in raspberries and passages in

00:05:19

gymnosperms that

00:05:21

produce and secrete resin, why is it

00:05:24

needed in order to glue, as if to

00:05:29

heal, a kind of framework that

00:05:31

can form in plants, let there

00:05:34

be some kind did a branch break off or did

00:05:36

something else happen and then

00:05:37

resin is produced

00:05:39

you need to write about the sinners

00:05:42

lactiferous and ovaries

00:05:46

you probably noticed when you pick a

00:05:49

dandelion or celandine and some kind

00:05:52

of white and yellow substance is also produced this way

00:05:57

but you can’t help but remember about nettle

00:06:01

nettle also protects itself, we don’t really

00:06:06

have such masks, it’s stinging, if you touch it,

00:06:10

you can get very serious,

00:06:12

as if we’re talking about a burn, but it’s not a burn, well,

00:06:15

it will be such an unpleasant reaction on the skin,

00:06:19

arastene, this can be used as a

00:06:21

protection, and of course there are substances

00:06:25

that we call phytoncides and there CD

00:06:30

for us these are useful substances, again

00:06:34

these are produced by coniferous plants, it is very

00:06:37

useful to go for a walk in a coniferous forest

00:06:40

to breathe this air, especially for those

00:06:42

people who have problems with the respiratory

00:06:45

system, well, you can also say there are

00:06:49

such digestive glands,

00:06:51

digestive glands they

00:06:56

All plants have it, of course, but plants

00:06:58

that are predators, that is, I am a

00:07:00

plant that can feed on

00:07:03

insects, for example, sundew, and

00:07:05

this

00:07:07

digestive juice is produced, special enzymes

00:07:09

that will then dissolve the

00:07:11

insect’s body and the plant can absorb

00:07:14

this food,

00:07:17

so let’s do more Let's see what we

00:07:21

learned today, and so plants do not have a

00:07:24

special

00:07:26

excretory system, they do not have special

00:07:28

organs, but there are individual cells,

00:07:31

some small formations

00:07:34

and a whole excretory tissue that

00:07:36

secretes something, these may be products

00:07:40

that are not needed, for example, when

00:07:43

the process of photosynthesis occurs then

00:07:46

the plant absorbs carbon dioxide and

00:07:49

releases oxygen; this is the process of nutrition

00:07:53

for the plant and the second process is called

00:07:56

respiration; the process in which plants

00:08:00

absorb oxygen and release carbon

00:08:04

dioxide; excess water can be removed by special

00:08:11

cells; this process is called

00:08:13

mutation; sometimes we can observe that

00:08:15

plants seem to be crying; there are special

00:08:18

glands characteristic of plants. which

00:08:21

live in saline soils and this salt is

00:08:24

not needed, it can also be removed, and there is also a

00:08:26

separate phenomenon of leaf fall, which also

00:08:29

sheds leaves that are no longer needed for winter,

00:08:32

thus going into winter

00:08:35

dormancy to adapt to winter rest for it.

00:08:39

Well, there are separate such formations

00:08:43

such as nectaries, resin tunnels and

00:08:46

lacticiferous and phytoncides they produce

00:08:49

substances that will help plants

00:08:51

protect themselves, which will help attract

00:08:54

insects or for some other purpose, this is where

00:08:58

our episode ends. In the

00:09:01

next lesson, I will tell you about the

00:09:03

features

00:09:04

of animals secreting all the good things for you

00:09:08

[music]

00:09:22

[music]

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