1
00:00:00,240 --> 00:00:05,000
hello let's start with video number three

2
00:00:08,919 --> 00:00:15,240
where do we have to write every information that we have today on the

3
00:00:15,240 --> 00:00:19,500
on the cardboard okay so the first thing you need to do is to leave some space

4
00:00:19,500 --> 00:00:23,640
here to write invertebrates all this area we're going to occupy with

5
00:00:23,640 --> 00:00:27,320
invertebrates so the first thing you need to do is to write invertebrates

6
00:00:27,320 --> 00:00:35,000
here make like a ribbon or something okay and here on the part that folds of

7
00:00:35,000 --> 00:00:43,159
your cardboard we're going to have the peripheral. Take the ruler on our A2 cardboard

8
00:00:43,159 --> 00:00:52,439
okay and we measure 13 centimeters okay remember this part okay on this part we

9
00:00:52,439 --> 00:01:00,479
measure 13 centimeters and we make a line to divide from groups okay 13

10
00:01:00,479 --> 00:01:09,200
centimeters line here to the fold and now we start making all these drawings

11
00:01:09,200 --> 00:01:15,719
okay so in the space that you deserve for the peripheral you need to make this

12
00:01:15,719 --> 00:01:21,659
drawing okay look in the other time because I have uploaded a picture of the

13
00:01:21,659 --> 00:01:26,579
whole board, okay? But follow my instructions, please. Okay, so we have to

14
00:01:26,579 --> 00:01:32,280
write the title, Porifera, which includes the sponges, okay? This is the group that

15
00:01:32,280 --> 00:01:37,280
includes sponges, but the scientific name for them will be Porifera. Okay, so

16
00:01:37,280 --> 00:01:45,319
let's see, the Porifera, the one that some of you might use for for bathing, okay,

17
00:01:45,319 --> 00:01:50,459
are animals, and you can think, well, they don't move, what are the animals? Well,

18
00:01:50,459 --> 00:01:56,700
they move but only when they are a larvae okay when they are larvae they can move but now when

19
00:01:56,700 --> 00:02:03,120
they are adults like this one that we have here they do not move and they also feed okay they

20
00:02:03,120 --> 00:02:11,460
eat things how do they eat basically okay the water yeah you need to make these arrows too

21
00:02:11,460 --> 00:02:22,620
okay the water gets inside by the pores that the sponge has it gets inside this

22
00:02:22,620 --> 00:02:32,110
place which is the atrium okay feeds all the different cells that are here all

23
00:02:32,110 --> 00:02:39,909
around the atrium and then it gets out by the osculum okay so that will be the

24
00:02:39,909 --> 00:02:47,009
place of the water. So the names that we need to write here are here the pores

25
00:02:47,009 --> 00:02:58,210
this one, this one, all the black holes are the pores, the inner part is the atrium

26
00:02:58,210 --> 00:03:06,530
and the upper part is the osculum. This is the hole which is at the top of

27
00:03:06,530 --> 00:03:14,629
the sponge. And why did I make this drawing here? These are from these cells, okay?

28
00:03:14,629 --> 00:03:20,629
These cells that are here at the atrium are the quanocytes. They have, what was

29
00:03:20,629 --> 00:03:26,030
the name of this? Flagellum, okay? This is a flagellum that moves the water and

30
00:03:26,030 --> 00:03:31,330
allows the water to move all around the inner part of the sponge, all around the atrium.

31
00:03:31,330 --> 00:03:37,469
now for the characteristics of the sponges we're going to do a pop-up like

32
00:03:37,469 --> 00:03:45,409
the one that I have here okay so in order to do this arrow okay what you

33
00:03:45,409 --> 00:03:52,310
need to do is to take a white paper okay and prepare something like this on the

34
00:03:52,310 --> 00:03:58,669
paper okay so we have here measures 12 centimeters from here to here 12

35
00:03:58,669 --> 00:04:10,189
centimeters okay the width is 4.5 centimeters and to make the arrow we have here 1.5 1.5

36
00:04:10,189 --> 00:04:17,069
and here to set the middle you take more or less the middle of the line okay of this 4.5

37
00:04:17,069 --> 00:04:27,870
and mark it and then you make this line you cut it and here i have set marks because because here

38
00:04:27,870 --> 00:04:37,230
we are going to fold it okay every three centimeters so three six nine twelve and

39
00:04:37,230 --> 00:04:46,990
here's where we are going to fold okay you see how it looks like i need to write in the arrow okay

40
00:04:46,990 --> 00:04:55,550
here peripherals equals sponges because peripherals are the same as sponges that they are

41
00:04:55,550 --> 00:05:03,050
Cecil which means that adults cannot move then they lack symmetry which means

42
00:05:03,050 --> 00:05:08,629
that they are not bilateral radial they do not have any type of symmetry they

43
00:05:08,629 --> 00:05:17,329
are filter feeders meaning that as I explained before then sponges feed all

44
00:05:17,329 --> 00:05:23,350
the things that get inside them and they have no nervous system which means that

45
00:05:23,350 --> 00:05:30,389
have no brain no eyes no senses at all you need to glue it you need to glue it on the left part

46
00:05:30,389 --> 00:05:38,709
of the drawing if the drawing is here on the left part we have it so when we unfold it it will go

47
00:05:38,709 --> 00:05:45,509
it will point at the sponge now the nectarines okay the nidarians are the yellow fish

48
00:05:45,509 --> 00:05:53,829
so under peripheral we're gonna leave 13 centimeters here okay so there was 13

49
00:05:53,829 --> 00:06:01,629
from here to here 13 from here to here another 13 okay and what you need to do

50
00:06:01,629 --> 00:06:10,430
also is to prepare a circles unit two circles okay each of them need to have

51
00:06:10,430 --> 00:06:18,230
six centimeters diameter diameter which means from here to here six centimeters

52
00:06:18,230 --> 00:06:24,709
and you need two circles okay when you have the two circles you need to do

53
00:06:24,709 --> 00:06:30,089
something like that how the first one on the first one let's do it here on the

54
00:06:30,089 --> 00:06:37,850
first one you're going to have it all on the board okay don't do it yet okay but

55
00:06:37,850 --> 00:06:42,589
the second one will be a flap that we turn up and down remember that we did

56
00:06:42,589 --> 00:06:47,990
this when we did the the center of the earth across the core the mantle okay

57
00:06:47,990 --> 00:06:55,589
with something like this okay and we're gonna make drawing out and inside here's

58
00:06:55,589 --> 00:07:01,470
what you need to write on those circles okay on the first one we have the polyp

59
00:07:01,470 --> 00:07:12,050
that is the cecil body of the cnidarians okay you have i didn't draw it inside okay i'll tell you

60
00:07:12,050 --> 00:07:19,970
have here the mouth and here the tentacle and then on the other part of the circle you have the medusa

61
00:07:19,970 --> 00:07:27,769
yes colega what to say our jellyfish it's more common we have up here the umbrella tentacles

62
00:07:27,769 --> 00:07:32,050
this is the soft part, we have the mouth inside here so we cannot see it

63
00:07:32,050 --> 00:07:35,170
and this is the manubrium, so at the end

64
00:07:35,170 --> 00:07:39,370
what you need to have is something like this, we have the

65
00:07:39,370 --> 00:07:43,889
we have the circle, ok, so one side

66
00:07:43,889 --> 00:07:47,269
is the polyp and on the other one is the medusa

67
00:07:47,269 --> 00:07:50,209
polyp, medusa, polyp, medusa

68
00:07:50,209 --> 00:07:56,189
so when you have prepared the circle, you need to write on top

69
00:07:56,189 --> 00:08:02,649
cnidarians bodies okay when you glue it on the on the cardboard and you write

70
00:08:02,649 --> 00:08:06,689
cnidarian bodies and on the left part the characteristics of the group so the

71
00:08:06,689 --> 00:08:12,689
first one will be that they have radial symmetry okay opposite to the bilateral

72
00:08:12,689 --> 00:08:19,230
symmetry they have radial symmetry in the tentacles tentacles they have or

73
00:08:19,230 --> 00:08:27,850
with stinging cells okay that are called neither sides okay this is thing and

74
00:08:27,850 --> 00:08:31,990
cells is a maybe some of you have suffered when you're at the beach and

75
00:08:31,990 --> 00:08:37,289
you'll find the Medusa and it stings you okay these are the neither sides they

76
00:08:37,289 --> 00:08:42,190
are carnivore they trap small fish for example and they eat it that's why they

77
00:08:42,190 --> 00:08:47,289
have the neither sides and they have simple sense organs like some of them to

78
00:08:47,289 --> 00:08:48,289
detect light.