El documento habla sobre los invertebrados. Menciona que no tienen esqueleto interno ni columna vertebral, y que se reproducen por huevos. Se clasifican en poríferos, cnidarios, equinodermos, moluscos y artrópodos. Estos grupos incluyen animales acuáticos como medusas, corales y crustáceos, así como terrestres como insectos y arañas.
18. phylum platyhelminthes II Full Explanation Yo yo Nody khan
The document summarizes key aspects of three phyla of parasitic flatworms - Monogenea, Trematoda, and Cestoidea. It describes their life cycles, important anatomical features, examples of parasites of humans, and how they infect and reside within host organisms. Some key points are that Monogenea have a direct life cycle, Trematoda have indirect life cycles requiring multiple hosts, and Cestoidea (tapeworms) absorb nutrients directly through their skin and consist of repeating reproductive segments.
Los cnidarios tienen forma de saco con células urticantes llamadas cnidoblastos que usan para la defensa y captura de presas. Existen en formas de pólipos fijos y medusas libres. Tienen un sistema nervioso primitivo y se reproducen de forma sexual y asexual alternando entre generaciones de pólipos y medusas.
Second-largest phylum in number of species- over 100,000 described.
Ecologically widespread- marine, freshwater, terrestrial (gastropods very successful on land)
Variety of body plans (therefore, many classes within the phylum)
Variety in body size- from ~1 mm to ~18 m (60 feet). 80% are under 5 cm, but many are large and therefore significant as food for man.
Cnidarians are a phylum of aquatic animals that date back approximately 700 million years. They display radial or biradial symmetry and tissue-level organization. Their body plans are simple sac-like structures with one opening for feeding and excretion. Cnidarians utilize stinging cells called nematocysts for defense and capturing prey. They also possess nerve nets, statocysts for balance, and in some cases simple light-sensing ocelli. Reproduction can occur sexually through larvae or asexually by budding. Major classes include Hydrozoa, Scyphozoa, Cubozoa, and Anthozoa. Coral reefs formed by cnidarians like hydroids, jellyfish
El documento habla sobre los invertebrados. Menciona que no tienen esqueleto interno ni columna vertebral, y que se reproducen por huevos. Se clasifican en poríferos, cnidarios, equinodermos, moluscos y artrópodos. Estos grupos incluyen animales acuáticos como medusas, corales y crustáceos, así como terrestres como insectos y arañas.
18. phylum platyhelminthes II Full Explanation Yo yo Nody khan
The document summarizes key aspects of three phyla of parasitic flatworms - Monogenea, Trematoda, and Cestoidea. It describes their life cycles, important anatomical features, examples of parasites of humans, and how they infect and reside within host organisms. Some key points are that Monogenea have a direct life cycle, Trematoda have indirect life cycles requiring multiple hosts, and Cestoidea (tapeworms) absorb nutrients directly through their skin and consist of repeating reproductive segments.
Los cnidarios tienen forma de saco con células urticantes llamadas cnidoblastos que usan para la defensa y captura de presas. Existen en formas de pólipos fijos y medusas libres. Tienen un sistema nervioso primitivo y se reproducen de forma sexual y asexual alternando entre generaciones de pólipos y medusas.
Second-largest phylum in number of species- over 100,000 described.
Ecologically widespread- marine, freshwater, terrestrial (gastropods very successful on land)
Variety of body plans (therefore, many classes within the phylum)
Variety in body size- from ~1 mm to ~18 m (60 feet). 80% are under 5 cm, but many are large and therefore significant as food for man.
Cnidarians are a phylum of aquatic animals that date back approximately 700 million years. They display radial or biradial symmetry and tissue-level organization. Their body plans are simple sac-like structures with one opening for feeding and excretion. Cnidarians utilize stinging cells called nematocysts for defense and capturing prey. They also possess nerve nets, statocysts for balance, and in some cases simple light-sensing ocelli. Reproduction can occur sexually through larvae or asexually by budding. Major classes include Hydrozoa, Scyphozoa, Cubozoa, and Anthozoa. Coral reefs formed by cnidarians like hydroids, jellyfish
Cnidarians are soft-bodied aquatic animals that exhibit radial symmetry and possess true tissues. They have a sac-like body with a central digestive cavity and a single opening surrounded by tentacles bearing stinging cells. Cnidarians exist as sessile polyps or free-swimming medusae, and their life cycle may alternate between these two forms. The phylum is divided into three classes: Hydrozoa (hydras), Scyphozoa (jellyfish), and Anthozoa (corals and sea anemones).
1. Describe los principales grupos de vertebrados, incluyendo peces, anfibios, reptiles, aves y mamíferos. 2. Explica algunas de las características clave que definen a cada grupo como su esqueleto, sistema respiratorio, reproducción y dónde viven. 3. Proporciona ejemplos de algunos animales representativos de cada grupo.
The document summarizes the five classes of echinoderms: Asteroidea (starfish), Ophiuroidea (brittle stars), Echinoidea (sea urchins and sand dollars), Holothuroidea (sea cucumbers), and Crinoidea (sea lilies). It describes the key characteristics of each class, including their anatomy, physiology, reproduction, and distinguishing features. The classes are defined by attributes such as number of arms, presence of a central disc, tube foot structure, feeding method, and whether they are sessile or mobile.
Los anfibios son vertebrados anamniotas que respiran a través de branquias en su etapa larvaria y pulmones cuando alcanzan la adultez. Se originaron hace aproximadamente 350 millones de años a partir de un antepasado común con los peces de aletas lobuladas. Se reproducen sexualmente mediante fecundación externa y son principalmente carnívoros, alimentándose de insectos, babosas y gusanos. Pueden vivir tanto en agua dulce como en zonas terrestres húmedas.
Reptiles are cold-blooded animals that include approximately 7,900 species living in a variety of habitats. They are characterized by having scaly skin, lungs used for breathing, and being egg-laying or live-bearing. The document describes the key organ systems of reptiles including their integumentary system made of thick, protective scaly skin; digestive system which varies depending on diet; circulatory system with two circulatory loops; and orders which classify reptiles such as snakes, lizards, turtles, crocodiles, and tuataras.
Cephalopods such as octopuses, squid, and cuttlefish evolved large brains, complex senses, and rapid locomotion for predation, but their numbers have declined dramatically. Vertebrates may have outcompeted cephalopods by developing active predatory lifestyles. Mollusks are a large phylum that includes snails, slugs, mussels and octopuses. They have soft bodies that are sometimes covered by an external shell secreted by the mantle. Mollusks display bilateral symmetry and their body plans generally include a head-foot region and visceral mass.
The document summarizes the phylum Mollusca. It is divided into four main classes: Gastropoda which includes snails and slugs, Bivalvia which includes clams and mussels, Cephalopoda which includes squid and octopus, and Polyplacophora which includes chitons. Molluscs are soft-bodied animals with bilateral symmetry and most secrete an external shell. They live in aquatic and terrestrial habitats and have well-developed organ systems including digestive, circulatory, respiratory, and nervous systems.
- The document describes the key characteristics of echinoderms including their pentamerous radial symmetry, calcareous endoskeleton, and water vascular system.
- Echinoderms are exclusively marine animals with bodies that are triploblastic, coelomate, and lack definite heads. Their skin contains spines, tubular tube feet, and other structures.
- They possess a unique water vascular system consisting of stone canals, a ring canal, and radial canals that transport seawater and aid in functions like respiration, locomotion, and osmoregulation.
Cephalopods like octopuses, squids, and cuttlefish are one of the most successful groups of mollusks due to several key characteristics. They have advanced nervous systems and eyes. They are highly mobile, using jet propulsion or other methods of locomotion. Their behaviors are also complex, using camouflage and other defenses. With around 800 living species that inhabit oceans worldwide, cephalopods have been able to thrive in various marine environments through their physiological and behavioral adaptations.
Los delfines son mamíferos acuáticos inteligentes que viven en grupos sociales. Tienen un cuerpo hidrodinámico adaptado para nadar rápido en el océano y comunicarse a través de silbidos de ultrasonido. Aunque los delfines tienen pocos depredadores naturales, están en peligro de extinción debido a la contaminación, la destrucción de hábitat, y las capturas accidentales en redes de pesca. Algunos delfines también son utilizados en delfinoterapia para tratar trastornos f
Este documento describe el proyecto de un grupo de estudiantes sobre los tiburones. Primero, los estudiantes votaron para elegir entre varios animales marinos y eligieron los tiburones. Luego, discutieron lo que ya sabían sobre los tiburones y lo que querían aprender, como cómo nadan y lo que comen. Hicieron dibujos iniciales y aprendieron más sobre cómo se mueven los tiburones de forma aerodinámica y cómo nacen. Al final, crearon un dibujos final que resume todo lo que aprendieron.
Los mamíferos se caracterizan por tener cuatro extremidades, ser de sangre caliente, vivíparos y amamantar a sus crías. Su piel está cubierta de pelo. Los mamíferos acuáticos como los cetáceos respiran por pulmones pero deben salir a la superficie para coger aire.
The document summarizes the characteristics of the phylum Cnidaria. It notes that Cnidaria have four divisions - Scyphozoa, Cubozoa, Hydrozoa, and Anthozoa. They have two basic body forms and lack bones, instead having a hydrostatic skeleton for flexibility and locomotion. Most Cnidaria are diploblastic with outer ectoderm and inner endoderm layers containing nerve nets. They have a nerve net system and diffuse respiration and circulation. Reproduction can be sexual or asexual. All Cnidaria have radial symmetry and tentacles containing stinging nematocyst cells.
Este documento describe las características de los equinodermos. Son invertebrados marinos con simetría radial y un esqueleto interno formado por placas óseas. Tienen diferentes formas de alimentarse dependiendo del grupo al que pertenecen, como algas o organismos microscópicos. La reproducción es sexual y tienen una gran capacidad de regeneración. Habitan en el fondo marino, arrecifes de coral o rocosos.
Cnidarians are soft-bodied aquatic animals that exhibit radial symmetry and possess true tissues. They have a sac-like body with a central digestive cavity and a single opening surrounded by tentacles bearing stinging cells. Cnidarians exist as sessile polyps or free-swimming medusae, and their life cycle may alternate between these two forms. The phylum is divided into three classes: Hydrozoa (hydras), Scyphozoa (jellyfish), and Anthozoa (corals and sea anemones).
1. Describe los principales grupos de vertebrados, incluyendo peces, anfibios, reptiles, aves y mamíferos. 2. Explica algunas de las características clave que definen a cada grupo como su esqueleto, sistema respiratorio, reproducción y dónde viven. 3. Proporciona ejemplos de algunos animales representativos de cada grupo.
The document summarizes the five classes of echinoderms: Asteroidea (starfish), Ophiuroidea (brittle stars), Echinoidea (sea urchins and sand dollars), Holothuroidea (sea cucumbers), and Crinoidea (sea lilies). It describes the key characteristics of each class, including their anatomy, physiology, reproduction, and distinguishing features. The classes are defined by attributes such as number of arms, presence of a central disc, tube foot structure, feeding method, and whether they are sessile or mobile.
Los anfibios son vertebrados anamniotas que respiran a través de branquias en su etapa larvaria y pulmones cuando alcanzan la adultez. Se originaron hace aproximadamente 350 millones de años a partir de un antepasado común con los peces de aletas lobuladas. Se reproducen sexualmente mediante fecundación externa y son principalmente carnívoros, alimentándose de insectos, babosas y gusanos. Pueden vivir tanto en agua dulce como en zonas terrestres húmedas.
Reptiles are cold-blooded animals that include approximately 7,900 species living in a variety of habitats. They are characterized by having scaly skin, lungs used for breathing, and being egg-laying or live-bearing. The document describes the key organ systems of reptiles including their integumentary system made of thick, protective scaly skin; digestive system which varies depending on diet; circulatory system with two circulatory loops; and orders which classify reptiles such as snakes, lizards, turtles, crocodiles, and tuataras.
Cephalopods such as octopuses, squid, and cuttlefish evolved large brains, complex senses, and rapid locomotion for predation, but their numbers have declined dramatically. Vertebrates may have outcompeted cephalopods by developing active predatory lifestyles. Mollusks are a large phylum that includes snails, slugs, mussels and octopuses. They have soft bodies that are sometimes covered by an external shell secreted by the mantle. Mollusks display bilateral symmetry and their body plans generally include a head-foot region and visceral mass.
The document summarizes the phylum Mollusca. It is divided into four main classes: Gastropoda which includes snails and slugs, Bivalvia which includes clams and mussels, Cephalopoda which includes squid and octopus, and Polyplacophora which includes chitons. Molluscs are soft-bodied animals with bilateral symmetry and most secrete an external shell. They live in aquatic and terrestrial habitats and have well-developed organ systems including digestive, circulatory, respiratory, and nervous systems.
- The document describes the key characteristics of echinoderms including their pentamerous radial symmetry, calcareous endoskeleton, and water vascular system.
- Echinoderms are exclusively marine animals with bodies that are triploblastic, coelomate, and lack definite heads. Their skin contains spines, tubular tube feet, and other structures.
- They possess a unique water vascular system consisting of stone canals, a ring canal, and radial canals that transport seawater and aid in functions like respiration, locomotion, and osmoregulation.
Cephalopods like octopuses, squids, and cuttlefish are one of the most successful groups of mollusks due to several key characteristics. They have advanced nervous systems and eyes. They are highly mobile, using jet propulsion or other methods of locomotion. Their behaviors are also complex, using camouflage and other defenses. With around 800 living species that inhabit oceans worldwide, cephalopods have been able to thrive in various marine environments through their physiological and behavioral adaptations.
Los delfines son mamíferos acuáticos inteligentes que viven en grupos sociales. Tienen un cuerpo hidrodinámico adaptado para nadar rápido en el océano y comunicarse a través de silbidos de ultrasonido. Aunque los delfines tienen pocos depredadores naturales, están en peligro de extinción debido a la contaminación, la destrucción de hábitat, y las capturas accidentales en redes de pesca. Algunos delfines también son utilizados en delfinoterapia para tratar trastornos f
Este documento describe el proyecto de un grupo de estudiantes sobre los tiburones. Primero, los estudiantes votaron para elegir entre varios animales marinos y eligieron los tiburones. Luego, discutieron lo que ya sabían sobre los tiburones y lo que querían aprender, como cómo nadan y lo que comen. Hicieron dibujos iniciales y aprendieron más sobre cómo se mueven los tiburones de forma aerodinámica y cómo nacen. Al final, crearon un dibujos final que resume todo lo que aprendieron.
Los mamíferos se caracterizan por tener cuatro extremidades, ser de sangre caliente, vivíparos y amamantar a sus crías. Su piel está cubierta de pelo. Los mamíferos acuáticos como los cetáceos respiran por pulmones pero deben salir a la superficie para coger aire.
The document summarizes the characteristics of the phylum Cnidaria. It notes that Cnidaria have four divisions - Scyphozoa, Cubozoa, Hydrozoa, and Anthozoa. They have two basic body forms and lack bones, instead having a hydrostatic skeleton for flexibility and locomotion. Most Cnidaria are diploblastic with outer ectoderm and inner endoderm layers containing nerve nets. They have a nerve net system and diffuse respiration and circulation. Reproduction can be sexual or asexual. All Cnidaria have radial symmetry and tentacles containing stinging nematocyst cells.
Este documento describe las características de los equinodermos. Son invertebrados marinos con simetría radial y un esqueleto interno formado por placas óseas. Tienen diferentes formas de alimentarse dependiendo del grupo al que pertenecen, como algas o organismos microscópicos. La reproducción es sexual y tienen una gran capacidad de regeneración. Habitan en el fondo marino, arrecifes de coral o rocosos.
El documento describe las fases de un proyecto de instalaciones eléctricas residenciales, incluyendo la planificación, diseño y construcción. En la fase de diseño se detallan los planos, especificaciones y complementos requeridos. El documento también cubre fundamentos técnicos como circuitos ramales, capacidad de elementos, salidas mínimas de tomacorrientes y alumbrado, y protección contra fallas a tierra.
El documento describe la técnica del aguafuerte, un método de grabado en el que se utiliza un ácido para morder las líneas en una plancha metálica previamente recubierta de barniz. Se explica que el aguafuerte surgió en el siglo XVI como una alternativa más sencilla al grabado a buril. Artistas como Durero, Rembrandt y Goya destacaron por su uso magistral de esta técnica para lograr efectos pictóricos y de claroscuro. El documento también proporciona detalles sobre los materiales
Différencier blennies et gobies ? Facile diront certains : les blennies ont une seule nageoire dorsale alors que chez les gobies, il y en a deux. Pas si sûr car la nageoire dorsale n’est pas toujours dressée.
1. U.D. 2 Les animaux vertébrés. Les poissons. 2ème Trimestre C.M.2
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8. Les poissons ont leur corps recouvert d’écailles, ils ont des nageoires et ils respirent par des branchies. Leur température interne dépend de l’extérieur. Ils sont ovipares.