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Annelids - Contenido educativo

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Subido el 5 de noviembre de 2020 por Andrés G.

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Welcome to MooMooMath and Science. 00:00:00
In this video I would like to talk about the phylum Annelida. 00:00:02
The phylum Annelida are made up of worms in which the bodies are made up of a series of 00:00:06
identical segments that runs from their head to their tails. 00:00:13
Some common examples include the earthworm, leeches, clamworm, and fireworms. 00:00:19
Here are a couple more characteristics of these worms 00:00:28
They have bilateral symmetry 00:00:32
They also include tissues and organs 00:00:36
They have a fluid filled internal cavity 00:00:42
Their body possesses a digestive system with a mouth and an anus 00:00:49
They have a nervous system with a ventral nerve cord 00:00:56
They have a closed circulatory system They do not have respiratory organs 00:01:01
They reproduce sexually and some are hermaphrodites 00:01:09
Probably the most common analid is the earthworm. 00:01:16
There are more than 27,000 kinds of earthworms. 00:01:21
They range from a half inch in length to the largest recorded earthworm ever was 22 feet. 00:01:25
Earthworms exist in great numbers and it is estimated that in a single acre of soil there 00:01:35
There may be up to a million earthworms. 00:01:43
Idioma/s:
en
Idioma/s subtítulos:
en
Autor/es:
MooMooMath and Science
Subido por:
Andrés G.
Licencia:
Reconocimiento - No comercial - Compartir igual
Visualizaciones:
76
Fecha:
5 de noviembre de 2020 - 16:59
Visibilidad:
Público
Enlace Relacionado:
https://www.youtube.com/watch?v=3uxHkGreFU4
Centro:
IES AGORA
Duración:
02′ 04″
Relación de aspecto:
1.78:1
Resolución:
1280x720 píxeles
Tamaño:
3.37 MBytes

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