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.
Los delfines viven cerca de las costas en aguas cálidas, se alimentan de peces, pulpos y gambas, y nacen vivos después de más de 10 meses de gestación, comunicándose entre sí mediante silbidos y gruñidos. Pueden vivir 20-25 años, sumergirse hasta 70 metros y permanecer bajo el agua durante 2 horas, aunque normalmente solo 15 minutos, y existen diferentes tipos de delfines.
The document discusses the phylum Annelida, or segmented worms. It describes their characteristics, such as being hermaphroditic and having a true coelom. It then discusses different classes of annelids, including Polychaeta (marine fanworms and free-swimming worms), Oligochaeta (earthworms), and Hirudinea (leeches). For earthworms specifically, it outlines their movement, excretion, digestion, respiration, circulation, response, and reproduction systems.
The document provides an introduction to the phylum Chordata, including three key unifying themes: 1) Chordates evolved from invertebrates but display innovations, 2) Chordates exhibit physical and behavioral specializations through evolution, and 3) Evolutionary innovations led to adaptive radiations. It describes five key characteristics of chordates - notochord, dorsal nerve cord, pharyngeal slits, muscle blocks, and postanal tail. It then discusses the three subphyla of chordates - invertebrate Urochordata and Cephalochordata, and vertebrate Vertebrata. Vertebrates exhibit all five chordate characteristics and have additional defining features like an endos
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.
Los delfines viven cerca de las costas en aguas cálidas, se alimentan de peces, pulpos y gambas, y nacen vivos después de más de 10 meses de gestación, comunicándose entre sí mediante silbidos y gruñidos. Pueden vivir 20-25 años, sumergirse hasta 70 metros y permanecer bajo el agua durante 2 horas, aunque normalmente solo 15 minutos, y existen diferentes tipos de delfines.
The document discusses the phylum Annelida, or segmented worms. It describes their characteristics, such as being hermaphroditic and having a true coelom. It then discusses different classes of annelids, including Polychaeta (marine fanworms and free-swimming worms), Oligochaeta (earthworms), and Hirudinea (leeches). For earthworms specifically, it outlines their movement, excretion, digestion, respiration, circulation, response, and reproduction systems.
The document provides an introduction to the phylum Chordata, including three key unifying themes: 1) Chordates evolved from invertebrates but display innovations, 2) Chordates exhibit physical and behavioral specializations through evolution, and 3) Evolutionary innovations led to adaptive radiations. It describes five key characteristics of chordates - notochord, dorsal nerve cord, pharyngeal slits, muscle blocks, and postanal tail. It then discusses the three subphyla of chordates - invertebrate Urochordata and Cephalochordata, and vertebrate Vertebrata. Vertebrates exhibit all five chordate characteristics and have additional defining features like an endos
This document summarizes key characteristics of poriferans (sponges) and placozoans. Sponges have choanocytes that capture food through phagocytosis and lack nerves and true musculature. They have an endoskeleton of mesohyl or spicules and spongin. Placozoans are simple multicellular organisms with two epithelial cell layers, glide using cilia or change shape, and digest food extracellularly. Both groups reproduce asexually through budding or fragmentation and sexually.
Marine flatworms are bilaterally symmetrical, acoelomate animals found in benthic marine habitats like reefs and lagoons. They have a dorsoventrally flattened body and lack circulatory and respiratory systems. Most are hermaphrodites that reproduce sexually. The phylum includes three classes: Turbellaria (free-living flatworms), Trematoda (flukes) and Cestoda (tapeworms). Polyclad flatworms make up the order Polycladida and have a highly branched gut and pharynx plicatus. They feed mainly on ascidians and crustaceans. Many species exhibit bright warning colors and mimic
Phylum Cnidaria includes animals such as jellyfish, sea anemones, corals, and Hydra. They have two main body forms: the polyp, which is tube-shaped and attached, and the medusa, which is umbrella-shaped and free-swimming. Cnidarians have stinging cells called nematocysts in their tentacles. They have radial symmetry and a simple tissue level of organization without organs. Most live in aquatic marine habitats and feed by stinging prey with their tentacles. Reproduction can occur sexually through medusa releasing eggs and sperm or asexually via budding. They play important ecological roles as predators, building coral reefs, and producing neurotoxins studied
The students in the class have chosen to do a project on dragons. They voted and decided to learn about dragons. They shared things they already knew about dragons and questions they had. They set up a special area in the classroom filled with information about dragons as they begin their research.
This document summarizes key information about the phylum Cnidaria, focusing on four classes: Hydrozoa, Anthozoa, Scyphozoa, and Cubozoa. It outlines their shared traits of radial symmetry, carnivorous diet, and ability to reproduce both sexually and asexually. It also describes the polyp and medusa life stages and body plan consisting of ectoderm, endoderm, mesoglea, mouth, and tentacles. Details are provided on nematocyst stinging cells and specific characteristics of corals, anemones, jellyfish, and hydrozoans.
Las orcas son uno de los depredadores más peligrosos en los mares. Cazan en manadas, atacando ballenas, delfines, focas y pájaros. Aunque son inteligentes y juguetones en cautiverio, en libertad son voraces depredadores que inspiran terror en sus presas.
Echinoderms are marine animals with radial symmetry and spiny skin. They include sea stars, sea urchins, sea cucumbers, and brittle stars. Sea stars have tube feet they use for movement and breathing, and have a central disc and arms. Sea urchins use their spines for protection and eat algae. Sea cucumbers have a leathery body and eat sediment from the sea floor.
Class Anthozoa includes coral polyps and sea anemones. They are called "flower animals" due to their flower-like appearance, with tentacles radiating from their bodies like petals and often being brightly colored. Coral polyps secrete cups of limestone for protection, which grow together over large colonies to form coral stone reefs that harbor tremendous biodiversity, comparable to tropical rainforests. Coral polyps photosynthesize through symbiotic algae called zooxanthellae and require warm, clear, shallow water for the algae to survive, providing 90% of the corals' diet.
Sponges and cnidarians are early branching animals. Sponges are multicellular, filter feeders that live attached to surfaces and have specialized cells but no tissues. Their bodies are asymmetrical and they rely on water flow for exchange of gases, nutrients, and waste. Cnidarians are radially symmetrical and have stinging cells. They exist as polyps or medusa and have simple digestive, circulatory, and nervous systems carried out by specialized cells and tissues. Examples are jellyfish, hydra, sea anemones, and corals.
The document discusses different types of jellyfish. It notes that the Irukandji jellyfish is the smallest but deadliest, while the Lion's Mane jellyfish is the largest, reaching over 7 feet wide. Most jellyfish eat plankton or smaller creatures, and are made of 90% water with tentacles, a bell-shaped body, and no bones, brain or heart. It provides tips for treating jellyfish stings, such as rinsing with salt water and applying vinegar or hot water.
This document summarizes key characteristics of poriferans (sponges) and placozoans. Sponges have choanocytes that capture food through phagocytosis and lack nerves and true musculature. They have an endoskeleton of mesohyl or spicules and spongin. Placozoans are simple multicellular organisms with two epithelial cell layers, glide using cilia or change shape, and digest food extracellularly. Both groups reproduce asexually through budding or fragmentation and sexually.
Marine flatworms are bilaterally symmetrical, acoelomate animals found in benthic marine habitats like reefs and lagoons. They have a dorsoventrally flattened body and lack circulatory and respiratory systems. Most are hermaphrodites that reproduce sexually. The phylum includes three classes: Turbellaria (free-living flatworms), Trematoda (flukes) and Cestoda (tapeworms). Polyclad flatworms make up the order Polycladida and have a highly branched gut and pharynx plicatus. They feed mainly on ascidians and crustaceans. Many species exhibit bright warning colors and mimic
Phylum Cnidaria includes animals such as jellyfish, sea anemones, corals, and Hydra. They have two main body forms: the polyp, which is tube-shaped and attached, and the medusa, which is umbrella-shaped and free-swimming. Cnidarians have stinging cells called nematocysts in their tentacles. They have radial symmetry and a simple tissue level of organization without organs. Most live in aquatic marine habitats and feed by stinging prey with their tentacles. Reproduction can occur sexually through medusa releasing eggs and sperm or asexually via budding. They play important ecological roles as predators, building coral reefs, and producing neurotoxins studied
The students in the class have chosen to do a project on dragons. They voted and decided to learn about dragons. They shared things they already knew about dragons and questions they had. They set up a special area in the classroom filled with information about dragons as they begin their research.
This document summarizes key information about the phylum Cnidaria, focusing on four classes: Hydrozoa, Anthozoa, Scyphozoa, and Cubozoa. It outlines their shared traits of radial symmetry, carnivorous diet, and ability to reproduce both sexually and asexually. It also describes the polyp and medusa life stages and body plan consisting of ectoderm, endoderm, mesoglea, mouth, and tentacles. Details are provided on nematocyst stinging cells and specific characteristics of corals, anemones, jellyfish, and hydrozoans.
Las orcas son uno de los depredadores más peligrosos en los mares. Cazan en manadas, atacando ballenas, delfines, focas y pájaros. Aunque son inteligentes y juguetones en cautiverio, en libertad son voraces depredadores que inspiran terror en sus presas.
Echinoderms are marine animals with radial symmetry and spiny skin. They include sea stars, sea urchins, sea cucumbers, and brittle stars. Sea stars have tube feet they use for movement and breathing, and have a central disc and arms. Sea urchins use their spines for protection and eat algae. Sea cucumbers have a leathery body and eat sediment from the sea floor.
Class Anthozoa includes coral polyps and sea anemones. They are called "flower animals" due to their flower-like appearance, with tentacles radiating from their bodies like petals and often being brightly colored. Coral polyps secrete cups of limestone for protection, which grow together over large colonies to form coral stone reefs that harbor tremendous biodiversity, comparable to tropical rainforests. Coral polyps photosynthesize through symbiotic algae called zooxanthellae and require warm, clear, shallow water for the algae to survive, providing 90% of the corals' diet.
Sponges and cnidarians are early branching animals. Sponges are multicellular, filter feeders that live attached to surfaces and have specialized cells but no tissues. Their bodies are asymmetrical and they rely on water flow for exchange of gases, nutrients, and waste. Cnidarians are radially symmetrical and have stinging cells. They exist as polyps or medusa and have simple digestive, circulatory, and nervous systems carried out by specialized cells and tissues. Examples are jellyfish, hydra, sea anemones, and corals.
The document discusses different types of jellyfish. It notes that the Irukandji jellyfish is the smallest but deadliest, while the Lion's Mane jellyfish is the largest, reaching over 7 feet wide. Most jellyfish eat plankton or smaller creatures, and are made of 90% water with tentacles, a bell-shaped body, and no bones, brain or heart. It provides tips for treating jellyfish stings, such as rinsing with salt water and applying vinegar or hot water.
2. ∗ Algemene dolfijnen informatie
∗ Wat staat er op het menu?
∗ Slim en sociaal!
∗ Evolutie
∗ Vissen en dolfijnen
∗ Ademhaling
∗ Weetjes
Inhoud:
3. ∗ Dolfijnen zijn familie van de in zee levende walvisachtigen. Ja, walvisachtigen. Grote vissen dus!
Dolfijnen als groep worden ook wel ‘dolfijnachtigen’ of ‘echte dolfijnen’ genoemd en vormen
een familie uit de onderorde ‘tandwalvissen’. Dolfijnen komen voor in alle zeeën, dus ook in
de Noordzee van België maar ook in zoet water rivieren. Er bestaan, zover bekend, ongeveer
36 verschillende soorten dolfijnen ter wereld. Wie weet zijn er nog een heel stel dolfijnen die
nog niet ontdekt zijn. De kleinste dolfijn, met een lengte van maar 1,2 meter en zo’n 40 kilo
aan gewicht, is de Havisidedolfijn. De grootste dolfijn ter wereld is de orka. De mannetjes
orka’s kunnen wel bijna 10 meter lang worden en zo’n 5,5 ton wegen (5,5 ton is 5.500 kilo!).
Algemene Dolfijnen Informatie
4. Wat staat er op de menu?
Bij voorbeelden:
Inktvis
Haring
Sprot
Makreel
6. ∗ Zowel dolfijnen als walvissen en bruinvissen zijn
afstammelingen van de zogeheten landzoogdieren.
De voorouders van de dolfijn zijn ongeveer vijftig
miljoen jaar geleden (vijftig miljoen jaar =
50.000.000 jaar!) in het water gaan leven. Dit
tijdperk heet ‘het Eoceen’.
Evolutie!
9. ∗ ...tijdens hun slaap aan het wateroppervlak liggen met hun
luchtgat boven water?
∗ …zo’n 35 jaar oud kan worden?
∗ …ruim 3,5 meter lang kunnen worden?
∗ …tot wel 200 kilo kunnen wegen?
∗ …zeven keer sneller kunnen zwemmen de snelste
menselijke zwemmers?
∗ …zeven meter hoog kunnen springen?
∗ …een zachte huid hebben?
∗
Weetjes?
