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Subido el 26 de marzo de 2020 por Marta G.

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hello let's start with video number three 00:00:00
where do we have to write every information that we have today on the 00:00:08
on the cardboard okay so the first thing you need to do is to leave some space 00:00:15
here to write invertebrates all this area we're going to occupy with 00:00:19
invertebrates so the first thing you need to do is to write invertebrates 00:00:23
here make like a ribbon or something okay and here on the part that folds of 00:00:27
your cardboard we're going to have the peripheral. Take the ruler on our A2 cardboard 00:00:35
okay and we measure 13 centimeters okay remember this part okay on this part we 00:00:43
measure 13 centimeters and we make a line to divide from groups okay 13 00:00:52
centimeters line here to the fold and now we start making all these drawings 00:01:00
okay so in the space that you deserve for the peripheral you need to make this 00:01:09
drawing okay look in the other time because I have uploaded a picture of the 00:01:15
whole board, okay? But follow my instructions, please. Okay, so we have to 00:01:21
write the title, Porifera, which includes the sponges, okay? This is the group that 00:01:26
includes sponges, but the scientific name for them will be Porifera. Okay, so 00:01:32
let's see, the Porifera, the one that some of you might use for for bathing, okay, 00:01:37
are animals, and you can think, well, they don't move, what are the animals? Well, 00:01:45
they move but only when they are a larvae okay when they are larvae they can move but now when 00:01:50
they are adults like this one that we have here they do not move and they also feed okay they 00:01:56
eat things how do they eat basically okay the water yeah you need to make these arrows too 00:02:03
okay the water gets inside by the pores that the sponge has it gets inside this 00:02:11
place which is the atrium okay feeds all the different cells that are here all 00:02:22
around the atrium and then it gets out by the osculum okay so that will be the 00:02:32
place of the water. So the names that we need to write here are here the pores 00:02:39
this one, this one, all the black holes are the pores, the inner part is the atrium 00:02:47
and the upper part is the osculum. This is the hole which is at the top of 00:02:58
the sponge. And why did I make this drawing here? These are from these cells, okay? 00:03:06
These cells that are here at the atrium are the quanocytes. They have, what was 00:03:14
the name of this? Flagellum, okay? This is a flagellum that moves the water and 00:03:20
allows the water to move all around the inner part of the sponge, all around the atrium. 00:03:26
now for the characteristics of the sponges we're going to do a pop-up like 00:03:31
the one that I have here okay so in order to do this arrow okay what you 00:03:37
need to do is to take a white paper okay and prepare something like this on the 00:03:45
paper okay so we have here measures 12 centimeters from here to here 12 00:03:52
centimeters okay the width is 4.5 centimeters and to make the arrow we have here 1.5 1.5 00:03:58
and here to set the middle you take more or less the middle of the line okay of this 4.5 00:04:10
and mark it and then you make this line you cut it and here i have set marks because because here 00:04:17
we are going to fold it okay every three centimeters so three six nine twelve and 00:04:27
here's where we are going to fold okay you see how it looks like i need to write in the arrow okay 00:04:37
here peripherals equals sponges because peripherals are the same as sponges that they are 00:04:46
Cecil which means that adults cannot move then they lack symmetry which means 00:04:55
that they are not bilateral radial they do not have any type of symmetry they 00:05:03
are filter feeders meaning that as I explained before then sponges feed all 00:05:08
the things that get inside them and they have no nervous system which means that 00:05:17
have no brain no eyes no senses at all you need to glue it you need to glue it on the left part 00:05:23
of the drawing if the drawing is here on the left part we have it so when we unfold it it will go 00:05:30
it will point at the sponge now the nectarines okay the nidarians are the yellow fish 00:05:38
so under peripheral we're gonna leave 13 centimeters here okay so there was 13 00:05:45
from here to here 13 from here to here another 13 okay and what you need to do 00:05:53
also is to prepare a circles unit two circles okay each of them need to have 00:06:01
six centimeters diameter diameter which means from here to here six centimeters 00:06:10
and you need two circles okay when you have the two circles you need to do 00:06:18
something like that how the first one on the first one let's do it here on the 00:06:24
first one you're going to have it all on the board okay don't do it yet okay but 00:06:30
the second one will be a flap that we turn up and down remember that we did 00:06:37
this when we did the the center of the earth across the core the mantle okay 00:06:42
with something like this okay and we're gonna make drawing out and inside here's 00:06:47
what you need to write on those circles okay on the first one we have the polyp 00:06:55
that is the cecil body of the cnidarians okay you have i didn't draw it inside okay i'll tell you 00:07:01
have here the mouth and here the tentacle and then on the other part of the circle you have the medusa 00:07:12
yes colega what to say our jellyfish it's more common we have up here the umbrella tentacles 00:07:19
this is the soft part, we have the mouth inside here so we cannot see it 00:07:27
and this is the manubrium, so at the end 00:07:32
what you need to have is something like this, we have the 00:07:35
we have the circle, ok, so one side 00:07:39
is the polyp and on the other one is the medusa 00:07:43
polyp, medusa, polyp, medusa 00:07:47
so when you have prepared the circle, you need to write on top 00:07:50
cnidarians bodies okay when you glue it on the on the cardboard and you write 00:07:56
cnidarian bodies and on the left part the characteristics of the group so the 00:08:02
first one will be that they have radial symmetry okay opposite to the bilateral 00:08:06
symmetry they have radial symmetry in the tentacles tentacles they have or 00:08:12
with stinging cells okay that are called neither sides okay this is thing and 00:08:19
cells is a maybe some of you have suffered when you're at the beach and 00:08:27
you'll find the Medusa and it stings you okay these are the neither sides they 00:08:31
are carnivore they trap small fish for example and they eat it that's why they 00:08:37
have the neither sides and they have simple sense organs like some of them to 00:08:42
detect light. 00:08:47
Idioma/s:
en
Autor/es:
Marta García
Subido por:
Marta G.
Licencia:
Reconocimiento - No comercial - Sin obra derivada
Visualizaciones:
169
Fecha:
26 de marzo de 2020 - 9:29
Visibilidad:
Clave
Centro:
IES FORTUNY
Duración:
09′ 10″
Relación de aspecto:
1.78:1
Resolución:
1280x720 píxeles
Tamaño:
226.51 MBytes

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