Classification of phylum Cnidaria upto class
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1. The phylum Cnidaria includes over 9,000 species of mostly marine animals classified into four classes: Hydrozoa, Scyphozoa, Anthozoa, and Cubozoa. 2. They are commonly called "stingers" because their tentacles contain stinging cells called cnidocytes that are used for defense, feeding, and attachment. 3. The classes differ in whether they are marine or freshwater, whether the polyp or medusa form is more prominent, and details of their gastrovascular cavity, mesogloea, and gonad placement. Examples across the classes include Hydra, jellyfish, sea anemones, corals, and box jellyfish
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The Gastropoda class includes snails and slugs found in both aquatic and terrestrial environments. There are three main subclasses - Prosobranchiata which have gills and separate sexes, Opisthobranchiata which have reduced or absent shells and are hermaphrodites, and Pulmonata which breathe through lungs. Pulmonata are further divided into orders including Basommatophora which have one genital opening, Stylommatophora which include land snails and slugs, and Systellommatophora which are tropical slugs. Gastropods play important ecological roles and exhibit tremendous diversity in shell structure, habitat, and reproductive strategies.
Lab 3 & 4 porifera & cnidaria
The document summarizes two phyla - Porifera (sponges) and Cnidaria (jellyfish, corals, anemones, hydras). It describes their key characteristics, structures, taxonomy, and life cycles. Sponges are the simplest multicellular organisms with no tissues; they have skeletal structures like spicules. Cnidarians have stinging cells called nematocysts and a sac-like body plan. Their life cycles may involve both asexual polyp and sexual medusa stages. The phyla are divided into classes based on their structural and morphological features.
phylum mollusca
The document provides information about the phylum Mollusca. It discusses that Mollusca is the second largest phylum and includes animals such as snails, squids, clams, and octopuses. It then summarizes the key characteristics of several mollusc classes, including Bivalvia (clams and mussels), Gastropoda (snails), and Cephalopoda (octopuses and squids). The document also describes some unique adaptations of molluscs and their life cycles.
Mollusca.pptx
This document provides information about the phylum Mollusca. It discusses the 7 main classes of molluscs:
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2) Aplacophora - Wormlike molluscs without a shell.
3) Polyplacophora - Contains chitons which have 8 overlapping shell plates.
4) Scaphopoda - Marine molluscs known as tusk shells that burrow into sediments.
5) Gastropoda - The largest class containing snails and slugs.
6) Bivalvia - Contains clams, oyst
CLASE 2. Poriferos.pptx laboratorio de zoología
The document discusses the phylum Porifera (sponges). It describes key characteristics of sponges including that they are multicellular filter feeders that lack tissues and organs. It outlines the three main classes of sponges - Calcarea, Demospongiae, and Hexactinellida - and notes their differences in skeleton composition and habitat. The summary provides an overview of sponge anatomy, life cycles, and their importance as producers of pharmacologically active compounds.
final-report-zoology.pptx animal science
Cnidaria is a phylum of over 11,000 aquatic animal species including jellyfish, corals, sea anemones and hydroids. They are characterized by radial symmetry, stinging cnidocytes, a simple two-layer tissue organization, and having either a polyp or medusa form. Cnidarians also have tentacles, a gastrovascular cavity, a nerve net, and can reproduce both sexually and asexually. The phylum is divided into 6 classes - Anthozoa, Hydrozoa, Scyphozoa, Cubozoa, Staurozoa - which differ in having polyp and/or medusa forms and characteristics of each.
Phylum ceolentrata
Coelenterata is a phylum that includes about 9000 species of mainly marine animals such as jellyfish, corals, sea anemones and hydra. They have a simple two-layered body structure with radial symmetry and stinging cells. Many form hard calcium carbonate skeletons and exist as solitary polyps or colonial organisms. The phylum contains three classes: Hydrozoa including freshwater hydra and the Portuguese man-of-war; Scyphozoa containing jellyfish; and Anthozoa with sea anemones and corals.
Coelenterata
1. The document describes the phylum Cnidaria, focusing on the class Coelenterata.
2. Coelenterata have a radial symmetrical body plan with two tissue layers (ectoderm and endoderm) separated by a jelly-like mesoglea. They exist in polyp and medusa forms.
3. Coelenterata are carnivorous, using stinging cells called cnidocytes on their tentacles to capture prey. They reproduce both sexually and asexually.
Phylum cnidaria
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.
Invertrebrates anilmals(Non-Fish Aquatic Organisms)
This document summarizes several types of non-fish aquatic resources found in Philippine waters, including sponges, corals, jellyfish, mollusks, and arthropods. It describes the key characteristics of phyla Porifera (sponges), Coelenterata (corals and jellyfish), Mollusca (gastropods, cephalopods, and pelecypods), and Arthropoda. Examples are provided of commercially important species from each group, along with details on their morphology, life cycles, uses, and methods of collection/harvesting.
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Invertrebrates anilmals(Non-Fish Aquatic Organisms)
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Although Artemia has been known to man for centuries, its use as a food for the culture of larval organisms apparently began only in the 1930s, when several investigators found that it made an excellent food for newly hatched fish larvae (Litvinenko et al., 2023). As aquaculture developed in the 1960s and ‘70s, the use of Artemia also became more widespread, due both to its convenience and to its nutritional value for larval organisms (Arenas-Pardo et al., 2024). The fact that Artemia dormant cysts can be stored for long periods in cans, and then used as an off-the-shelf food requiring only 24 h of incubation makes them the most convenient, least labor-intensive, live food available for aquaculture (Sorgeloos & Roubach, 2021). The nutritional value of Artemia, especially for marine organisms, is not constant, but varies both geographically and temporally. During the last decade, however, both the causes of Artemia nutritional variability and methods to improve poorquality Artemia have been identified (Loufi et al., 2024).
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Classification of phylum Cnidaria upto class
- 1. TOPIC : CLASSIFICATION OF PHYLUM CNIDARIA UPTO CLASS
- 2. CLASSIFICATION OF PHYLUM CNIDARIA Class Hydrozoa • Fresh water as well as marine. • polyyp and medusa often show polymorphism and metagenesis. • Mesogloea is acellular. • Gastrovascular cavity is undivided.Gonads are ectodermal and shed.
- 3. • Gametetesgametes directly surrounding water into the surrounding water. • Cnidoblast is present only in epidermis. • Examples, Hydra (fresh water polyp), Physalia (Portuguese man of war; neurotoxic, gas gland .
- 4. FIGURE OF HYDRA AND PHYSALIA
- 5. CLASSIFICATION OF PHYLUM CNIDARIA UPTO CLASS • It include over 9,000 species • These are mostly marine. • Important in coral reef. • These also called“the stingers” because their tentacles • are present near the mouth bearing stinging cells called Cnidoblast or cnidocytes composed of nematocysts.
- 6. CHARACTERISTICS OF PHYLUM CNIDARIA • Radial or Biradial symmetry • Tissue level organization and Diploblastic. • Mesoglia is present. • Gastrovascular cavity. • Nervous system in the form of nerve net. • Cnidocytes for defense , feeding and attachment. • Oral and Aboral end.
- 7. • Respond to stimuli from all directions • Examfishples: Hydra , Obelia, jell fish etc •
- 8. • Class Scyphozoa: • Extensively marin • Medusa form is most common. • Mesoglia is thick, gelatinous and contain cells. • Gastrovacular cavity is undivided. • Gonades are endodermal and shed the gametes into digestive track when escape through mouth.
- 9. • Cnidoblast is present in epidermis and gastroderm. • Example:AureIia( jelly fish,moon fish),larva • : Ephyra etc. • fig : Aurelia
- 10. • (3) Anthozoa (Actinozoa) • Exclusively Marine. • Only polyp form • .Mesogloea contains cells and fibers. • Gastrovascular cavity has compartments, i.e., mesenteries. • Gonads are endodermal and shed gamete into digestive tract escape via mouth. • •
- 11. • .Cnidoblast is present in epidermis and gastrodermis. • This class has two types of animals: Anemones (Skeleton absent) Adamisa (Sea anemone) and Corals (CaCO3 skeleton) – Pennautula (Sea pen), Gorgonia (Sea fan).Gastrodermal in origin; medusa cuboidal in arine, Chirones, Fleckeri, charybdea. • fig: Sea Anemone
- 12. • 4) Class Cubozoa (ku”bo-zo’ah) • Medusa prominent in the life history, polyp small: gametes gastrodermal in origin, medusa cuboidal in shape with tentacles that hang from each corner of the bell: marine, Chirones, Fleckeri, charybdea. • fig:charybdea