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NS 3º U3 L1 Vital Functions Invertebrates - Contenido educativo

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Subido el 17 de enero de 2024 por Fernando G.

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Hello boys and girls. Welcome to a new natural science unit. Unit number three 00:00:00
Invertebrates 00:00:07
Remember from last year that 00:00:09
Invertebrates are those animals which do not have a backbone and a skeleton 00:00:12
inside of them 00:00:20
Lesson number one 00:00:23
vital functions of 00:00:25
Invertebrates 00:00:28
Invertebrates 00:00:30
perform three vital functions 00:00:32
one 00:00:36
nutrition to 00:00:38
reproduction three interaction 00:00:41
Vital function number one nutrition 00:00:48
Carnivores 00:00:54
Spiders and dragonflies only eat other animals 00:00:56
Herbivores 00:01:04
Grasshoppers only eat plants 00:01:06
Omnivores 00:01:12
Ladybugs or snails eat both animals and plants 00:01:15
Invertebrates 00:01:21
What type of animals are these in terms of nutrition? 00:01:24
Spiders are 00:01:30
Carnivores 00:01:32
Ladybugs are 00:01:34
Omnivores 00:01:37
Grasshoppers are 00:01:39
Herbivores 00:01:41
Snails are 00:01:44
Omnivores 00:01:47
Dragonflies are carnivores 00:01:50
Vital function number two 00:01:55
reproduction 00:01:58
reproduction one 00:01:59
all 00:02:01
invertebrates are 00:02:02
oviparous animals 00:02:05
They lay eggs 00:02:07
Some are also 00:02:09
oviviparous animals that means that the eggs 00:02:12
Grow inside their bodies and they hatch 00:02:16
Before or after they lay them 00:02:22
For example in beetles, aphids or flies 00:02:26
Reproduction two types of reproduction 00:02:34
Sexual reproduction 00:02:39
Asexual reproduction 00:02:44
sexual reproduction a male and female are 00:02:49
necessary to create a new organism 00:02:54
The offspring or baby may be different from the parents 00:02:58
Type B or 2 00:03:07
asexual reproduction 00:03:10
One organism makes an identical copy of itself 00:03:12
In this case the offspring or baby is 00:03:19
identical to the parent 00:03:24
We are going to learn two types of asexual reproduction 00:03:29
first 00:03:34
budding 00:03:36
The new organism grows in the parent's body and then 00:03:38
separates 00:03:44
Let's see the steps 00:03:45
Reproduction in hydra by budding 00:03:48
One we have a parent hydra 00:03:53
two 00:03:57
We can see that here a bud is developing 00:03:58
Three we have a new bud 00:04:03
Four we have a new hydra separated from the parent 00:04:07
the second type of 00:04:12
asexual reproduction is known as 00:04:15
fragmenting. In this case one part of the parent is broken and separated first and then 00:04:19
two new 00:04:27
organisms start to grow from the different parts 00:04:29
As we can see in this example the reproduction in a starfish by 00:04:33
fragmenting we have a starfish a parent it breaks in two and from each part 00:04:39
It starts to grow a full starfish and then we have two 00:04:47
identical organisms 00:04:53
Vital function number three is 00:04:57
Interaction 00:05:00
Interaction one 00:05:02
All animals 00:05:05
interact with the environment 00:05:07
Most invertebrates live in groups or large communities 00:05:10
For example hermit crabs are very social and they live in big groups 00:05:18
On the other hand bees live in beehives 00:05:27
forming large communities 00:05:33
Interaction number two 00:05:39
Most invertebrates have 00:05:42
sense organs 00:05:45
Do you remember the five senses? 00:05:47
Okay, for example 00:05:50
octopuses use 00:05:53
six arms and two legs 00:05:56
to eat and move around 00:06:00
on the other hand the orchid mantis uses camouflage to attract and 00:06:03
hide from its prey 00:06:10
before she hunts it 00:06:12
For example crickets or cicadas use sounds 00:06:17
to warn from a danger or attract the opposite sex 00:06:24
for sexual reproduction 00:06:31
On the other hand 00:06:35
snappy shrimps use their claws to snap noise and avoid 00:06:37
predators 00:06:44
That's all for today. Thank you very much for listening 00:06:46
You 00:06:53
Idioma/s:
en
Autor/es:
Fernando García
Subido por:
Fernando G.
Licencia:
Reconocimiento - No comercial - Sin obra derivada
Visualizaciones:
70
Fecha:
17 de enero de 2024 - 13:20
Visibilidad:
Clave
Centro:
CP INF-PRI IPLACEA
Duración:
06′ 53″
Relación de aspecto:
1.78:1
Resolución:
1092x614 píxeles
Tamaño:
23.22 MBytes

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