RESUMO - ANIMAIS INVERTEBRADOS
Summary
TLDRThis video script delves into the world of invertebrates, the majority of animal species on Earth, highlighting their common features like the absence of a vertebral column and heterotrophic nutrition. It covers a range of invertebrate groups, including sponges, cnidarians, flatworms, nematodes, mollusks, annelids, arthropods, and echinoderms, each with unique characteristics and habitats. The script also touches on parasitic invertebrates and emphasizes the diversity within this group, from marine environments to terrestrial habitats.
Takeaways
- 🐙 Invertebrates make up the majority of animal species on our planet and exhibit many differences but also share common characteristics.
- 🦴 They lack a vertebral column and skull, which is a defining feature of invertebrates.
- 🧬 Invertebrates have eukaryotic cells with a nucleus enclosed by a nuclear membrane.
- 🍽️ They are heterotrophic, meaning they feed on other living organisms as they cannot produce their own food.
- 🐠 Invertebrates are multicellular organisms with tissues and organs, although some like Porifera (sponges) do not have true tissues.
- 🌊 They can be found in various environments including marine, freshwater, and terrestrial habitats, as well as parasitic within other animals.
- 🐛 Parasitic invertebrates include the tapeworm, which causes taeniasis, and the roundworm, which causes ascaris.
- 🔍 There are approximately 33 phyla of invertebrates, but educational books commonly refer to only eight of them.
- 🧽 Porifera, or sponges, are characterized by their porous bodies and lack of true tissues.
- 🌀 Cnidarians live in aquatic environments and have radial symmetry with a gastrovascular cavity that serves as both a mouth and an anus.
- 🐛 Platyhelminthes, or flatworms, have a dorsally flattened body and can be both free-living and parasitic.
- 🐛 Nematodes, or roundworms, are elongated with a cuticle covering their body and are found in various environments, including as parasites.
- 🐚 Mollusks are soft-bodied animals, some of which have a calcium carbonate shell for protection, and are predominantly marine.
- 🐛 Annelids, or segmented worms, have bodies divided into rings and can be found in both freshwater and soil environments.
- 🦂 Arthropods are the most diverse group of invertebrates with an exoskeleton and jointed appendages, which include insects, crustaceans, and arachnids.
- 🌊 Echinoderms are marine animals with a rigid, calcium-based endoskeleton and a water vascular system for movement.
Q & A
What is the main characteristic that defines invertebrates?
-Invertebrates are defined by their lack of a vertebral column and cranium, and they possess eukaryotic cells with a nucleus enclosed by a nuclear membrane.
What type of nutrition do invertebrates rely on?
-Invertebrates rely on heterotrophic nutrition, meaning they need to consume other living beings as they cannot produce their own food.
Are all invertebrates multicellular organisms?
-Yes, invertebrates are multicellular organisms, composed of more than one cell, and most have tissues and organs.
Can invertebrates be found in various environments?
-Invertebrates can be found in a wide range of environments, including marine, freshwater, and terrestrial habitats, as well as living inside other animals as parasites.
What are some examples of invertebrate parasites?
-Examples of invertebrate parasites include the tapeworm, which causes taeniasis, and the roundworm, which causes ascariasis.
How many phyla of invertebrates are there approximately?
-There are approximately 33 phyla of invertebrates, although most educational books typically reference only eight of them.
What is a characteristic feature of sponges, which are invertebrates?
-Sponges, or poriferans, are characterized by their porous bodies and lack of true tissues.
What type of body symmetry do cnidarians have?
-Cnidarians have radial body symmetry, and their gastrovascular cavity has a single opening that serves for both food intake and waste expulsion.
What is a distinctive feature of flatworms?
-Flatworms, or platyhelminths, have a dorsoventrally flattened body and are called 'flat worms' due to this feature.
How do nematodes, another group of invertebrates, differ from other invertebrates?
-Nematodes have a fusiform, elongated body with narrower extremities and are covered by a cuticle that coats their entire body.
What is unique about the exoskeleton of arthropods?
-The exoskeleton of arthropods is rich in chitin, which is rigid and prevents growth, necessitating regular shedding of the exoskeleton as the animal grows.
What is the main feature of echinoderms' skeletal system?
-Echinoderms have a skeletal system made of rigid calcium carbonate plates, and they possess a hydraulic system of water vascular channels that form tube feet for movement.
Outlines
🐙 Invertebrate Overview and Characteristics
This paragraph introduces invertebrates, a vast group of animals that lack a vertebral column and cranium, and are characterized by a eukaryotic cell with a defined nucleus. It emphasizes their heterotrophic nutrition, meaning they feed on other living beings, and their multicellular nature with tissues and organs, except for Porifera. The paragraph also mentions the diverse habitats of invertebrates, including marine, freshwater, and terrestrial environments, and even parasitic lifestyles. Examples of invertebrate parasites are given, such as the tapeworm causing dengue and the roundworm causing ascariasis. The paragraph concludes by stating that there are approximately 33 phyla of invertebrates, with eight being the most studied in educational books.
🌊 Aquatic Invertebrates and Their Unique Features
The second paragraph delves into specific types of aquatic invertebrates, starting with Porifera, known as sponges, which have a porous body and lack true tissues. It then describes Cnidarians, which exhibit radial symmetry and possess a gastrovascular cavity with a single opening for both food intake and waste expulsion. Cnidarians also have specialized cells called cnidocytes for defense. The paragraph moves on to Platyhelminthes, or flatworms, characterized by their dorsoventrally flattened bodies and the presence of parasitic species. Nematodes, with their elongated, fusiform bodies and protective cuticle, are also mentioned. Mollusks, the second-largest animal group by species count, are highlighted for their soft bodies and, in some cases, protective calcium carbonate shells. The paragraph concludes with Annelids, which have a segmented body and are found in various habitats, and Arthropods, noted for their exoskeleton and jointed appendages. Lastly, Echinoderms are introduced as marine animals with a rigid, calcareous endoskeleton and a hydraulic system that enables their unique form of locomotion.
Mindmap
Keywords
💡Invertebrates
💡Eukaryotic cell
💡Heterotrophic nutrition
💡Pluricellular organisms
💡Porifera
💡Cnidarians
💡Flatworms
💡Nematodes
💡Mollusks
💡Annelids
💡Arthropods
💡Echinoderms
Highlights
Invertebrates represent the majority of animals on our planet, showcasing a wide variety of species with common characteristics.
All invertebrates lack a vertebral column and cranium, and possess eukaryotic cells with a defined nuclear membrane.
Invertebrates are heterotrophic, relying on other living beings for nutrition as they cannot produce their own food.
They are multicellular organisms with most having tissues and organs, except for poriferans.
Invertebrates can be found in diverse environments, including marine, freshwater, terrestrial, and as parasites within other animals.
Parasitic invertebrates such as tapeworms causing diphyllobothriasis and roundworms causing ascaris are mentioned as examples.
There are approximately 33 phyla of invertebrates, with 8 being the most studied in educational books.
Poriferans, also known as sponges, are characterized by their porous bodies and lack of true tissues.
Cnidarians are aquatic animals with radial symmetry and a gastrovascular cavity with a single opening for food intake and waste expulsion.
Cnidarians possess specialized cells called cnidocytes for the discharge of stinging substances.
Platyhelminthes, or flatworms, are characterized by their dorsoventrally flattened bodies and both free-living and parasitic species.
Nematodes, known for their elongated fusiform bodies and cuticle covering, are found in various environments with both parasitic and free-living species.
Mollusks are soft-bodied animals with the second-largest number of species described, many of which are marine and some have calcium carbonate shells.
Annelids, with bodies segmented into rings, inhabit both freshwater and soil environments.
Arthropods are the most diverse group of species with a distinctive exoskeleton and jointed appendages.
The exoskeleton of arthropods is rich in chitin and must be regularly shed to allow for growth.
Echinoderms are marine animals with a rigid, calcareous endoskeleton and a hydraulic system of water vascular channels forming ambulacral feet for movement.
The video concludes with an invitation to like, share, and subscribe for more educational content.
Transcripts
se você conhece os animais invertebrados
sabe quem são eles quais as suas
principais características e como são
classificados Então fique comigo pois
nesse vídeo falaremos sobre os animais
invertebrados
e os invertebrados forma um grande grupo
que representa a maioria dos animais
encontrados em nosso planeta eles
apresentam muitas diferenças entre si
porém algumas características em comum
podem ser observadas são características
comuns a todos os invertebrados
ausência de coluna vertebral e crânio
célula do tipo eucariótica que possui
núcleo delimitado por uma membrana
nuclear
a nutrição heterotrófica ou seja todos
os invertebrados precisam alimentar-se
de outros seres vivos pois não são
capazes de produzir seu próprio alimento
e eles são seres pluricelulares
formados por mais de uma célula a
maioria possui tecidos e órgãos porém
essas características não estão
presentes em poríferos os invertebrados
são encontrados nos mais variados
ambientes não sendo possível descrever
apenas um habitat para essas espécies
podemos encontrá-los por exemplo no
ambiente marinho e de água doce e no
ambiente terrestre
Além disso existem espécies que vivem no
corpo de outros animais sendo essas
chamadas de parasitas
como exemplo de animais invertebrados
parasitas podemos citar a tênia que
causa a Denise e a lombriga que causa
ascaridíase
existem aproximadamente 33 filos de
invertebrados
Porém na maioria dos livros didáticos
observamos a referência apenas oito
deles
os 8 os vertebrados mais estudados são
os poríferos que são conhecidos também
como esponjas e destacam-se por
possuírem um corpo Rico empórios
e os bonifero são animais sésseis quando
adultos e se alimentam por meio de
filtração ou seja retiram partículas de
alimento da água quando esta passa pelo
seu corpo
desses animais não se verifica a
presença de tecidos verdadeiros
os cnidários que são um grupo de animais
que vivem no ambiente aquático
e o corpo dessas espécies apresenta
simetria Radial a sua cavidade
gastrovascular apresenta apenas uma
abertura A qual funciona para a entrada
de alimentos e para saída de resíduos
e pode-se observar nesses animais duas
variações no plano corporal
pólipos e medusas
um desses animais estão presentes
células especializadas na eliminação de
substâncias urticantes
chamadas cnidócitos os platelmintos que
possuem corpo dorsoventralmente achatado
por essa característica são chamados de
vermes achatados
eles são encontrados em diversos
habitantes existindo espécies de vida
livre e também espécies parasitas
e os nematódeos que são animais
encontrados em vários ambientes apesar
de serem conhecidos principalmente pelas
espécies parasitas
Esses animais apresentam corpo fusiforme
alongado com extremidades mais estreitas
e possuem uma cutícula que reveste todo
o corpo
os moluscos são animais do corpo mole e
o segundo maior grupo de animais em
número de espécies descritas
alguns representantes possuem concha
rica em carbonato de cálcio revestindo e
Protegendo o seu corpo a maioria dos
seus representantes e marinha
e os anelídeos que como o nome sugere
apresenta o corpo dividido em anéis
eles ocupam também diferentes habitats'
sendo encontrados indivíduos em ambiente
de água doce salgada e no solo húmico e
os artrópodes representa um grupo com
maior diversidade de espécies conhecidas
a presença de um exoesqueleto e de
apêndices articulados é característica
marcante nesses animais
o exoesqueleto é rico em que tina e
ajuda na proteção do animal por ser
rígido impede o crescimento fazendo com
que o animal troque regularmente esse
esqueleto externo
Ah e por fim os equinodermos que são
animais marinhos que apresentam o Enzo
esqueleto formado por placas calcárias
rígidas
eles possuem um sistema formado por uma
rede de canais Hidráulicos que se
ramificam formando os chamados pés
ambulacrais
quem são esses pés que garantem a
movimentação desses animais
Ah e por hoje é isso Se gostou deixa um
like compartilhe e não se esqueça de se
inscrever para acompanhar as próximas
aulas
Obrigado pela sua atenção e até a
próxima tchau
[Música]
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