What Percent Of The Animal Kingdom Do Vertebrates Makeup Cnideria

The Animal kingdom is also known equally Animalia, it consists of over a million species of animals. Remembering the character of individual animals is an impossible job and for this reason, the need for classification becomes more important. This classification besides helps in assigning a systematic position to newly described or discovered species. In this article, we are going to learn about the types of animals that are divided into Phylums. But before that, we demand to learn the basis of nomenclature.

Read Animal Morphology.

What is Animal Kingdom?
Basis of Classification
Important Characteristics of Different Phylum
- Porifera (Pore bearers)
- Cnidaria (Sac-like animals)
- Platyhelminthes (Flatworms)
- Aschelminthes (Roundworms)
- Annelida (Segmented)
- Arthropoda
- Mollusca
- Echinodermata
- Chordata
Animal Kingdom Nautical chart
Creature Kingdom Notes FAQs

What is Animal Kingdom?

The Animal kingdom is also known every bit Animalia, it consists of over a million species of animals. Animate being Kingdom is a basic group of natural objects that includes all living and extinct animals. Remembering the character of individual animals is an impossible task and for this reason, the need for classification becomes more important. This classification also helps in assigning a systematic position to newly described or discovered species.

Footing of Classification

Despite the differences in grade of unlike animals and structure, there are fundamental features mutual to various individuals and those features are:

Organization of cells : The animals in which cells are arranged in 2 embryonic layers, external ectoderm and internal endoderm are chosen diploblastic . Eg. Porifera and Cnidaria.
Trunk symmetry : symmetry and asymmetry
Symmetry : radial symmetry and Bilateral symmetry
Nature of coelom : The body cavity which is lined by mesoderm is chosen coelom. Animals possessing coelom are called coelomates (Annelida, Chordates, Mollusca). In some animals, the crenel is not lined by mesoderm but scattered as pouches in betwixt ectoderm and endoderm, which are called pseudocoelomates (Aschelminthes). The animals in which the body crenel is absent are chosen acoelomates (Platyhelminthes).
Patterns of digestive, circulatory or reproductive systems : Incomplete digestive organization has one opening but the consummate digestive system has two opening- mouth and anus. These features are used as the ground of animate being classification and based on this the characteristics of different phyla are discussed ahead.

Important Characteristics of Different Phylum

The dissimilar types of Phylum and their characteristics are given below:

Porifera (Pore bearers)

Porifera is a phylum of aquatic invertebrate animals that comprises the sponges.

- The simplest multicellular aquatic animal mostly found in the sea but only those belonging to the family Spongillidae live in freshwater.
- The body is non differentiated in tissues.
- Spongocoel, a hollow tube present in their body.
- Ostia, many pocket-size pores present in their body from which water enters the torso.
- Osculum, a unmarried large opening located at the top of their torso, is the exit for water.
- The Culvert system, which consists of Ostia and canals, is unique to this phylum.
- H2o apportionment is seen in their body.
- Example: Spongilla (freshwater sponge), Euspongia (Bath sponge), Sycon, scypha etc.

Cnidaria (Sac-like animals)

Cnidaria is a phylum of aquatic invertebrate animals that comprises the coelenterates.

- Diploblastic, multicellular animals with tissue class of body organization.
- Digestion takes identify in the coelenteron, a gastrovascular crenel formed by 2-layered torso walls i.e. the epidermis and the gastrodermis.
- This cavity opens past a mouth at one finish only.
- Tentacles found around the mouth opening, having peculiar stinging prison cell organelles known as nematocysts. These tentacles are used in the offence, defense, nutrient capture and adhesion.
- Respiratory, circulatory and excretory organs are not present. Example: Hydra, Obelia, Aurelia (Jellyfish), Pennulata (Sea pen), Corallium (Red coral), physalis (Portuguese man of war), Millipore (Coral), Metridium (Sea anemone) etc.

Platyhelminthes (Flatworms)

Platyhelminthes is a phylum of soft-bodied bilaterally symmetrical usually flattened invertebrates comprising the planarians, flukes, tapeworms, and related worms.

- Small-scale, soft, flattened, unsegmented, triploblastic worms practise not have any cavities.
- Known equally flatworms considering these are bilaterally symmetrical with a dorso-ventrally flattened body.
- An incomplete digestive arrangement is found in them with no circulatory, respiratory and skeletons.

Aschelminthes (Roundworms)

Aschelminthes are invertebrate animals belonging to a group of phyla that are distinguished past the lack of well-developed coelom and claret vessels. Most are infinitesimal wormlike animals, including the nematodes, rotifers, and water bears.

- Mostly aquatic, complimentary-living or parasitic.
- Trunk slender, vermiform, unsegmented, flat or cylindrical, triploblastic and bilaterally symmetrical.
- Organ organization grade body system is found.
- Pseudocoelomate, which means torso cavity is false.
- Tough, resistant cuticles cover the torso.
- The digestive system is consummate, but no circulatory or respiratory system is found.
- Protonephridia is an excretory organ found in some of them.

Instance: Ancylostoma (Hookworm), Ascaris (Roundworm), Wuchereia (Filarial worm) etc .

Annelida (Segmented)

Annelida is a large phylum that comprises segmented worms, which include earthworms, lugworms, ragworms, and leeches.

- Elongated, bilaterally symmetrical, triploblastic body and shows metamerism.
- Seagate or chaetae and parapodia are the locomotory organs.
- Haemoglobin is not present in RBC while it is dissolved in plasma.
- A closed circulatory organization is present and nephridia acts every bit an excretory organ.
- Larva when present in the trochophore. Regeneration is common.

Example: Nereis, Pheretima (earthworm), Hirudinaria etc.

Arthropoda

Arthropoda is a large phylum of invertebrate animals that includes insects, spiders, crustaceans, and their relatives. They take a segmented body, an external skeleton, and jointed limbs.

- The largest number of species vest to this phylum.
- Bilaterally symmetrical, triploblastic and metamerically segmented body.
- The body is divided into iii parts i.e. head, thorax and belly. Head and thorax often fused to form a cephalo-thorax.
- The exoskeleton is present and made of the cuticle.
- The body crenel is haemocoel i.e. filled with blood.
- Open up circulatory system is present.
- Excretory organs are green glands, coxal glands or Malpighian tubules.

Mollusca

The animals belonging to the phylum Mollusca accept soft-bodies, triploblastic and bilaterally symmetrical and coelomate.

- Take a soft, unsegmented torso and the body is covered by a fleshy fold of body wall called the curtain.
- Take one or two calcareous shells.
- Gills or pulmonary chambers are present for respiration.
- Hemocyanin, the copper-containing respiratory pigment, is dissolved in the plasma.
- The excretory organ is the kidney or the organ of Bojanus or kebers organ.
- The evolution tin be straight or indirect with three larval stages i.east. trochophore, veliger, glochidium etc.

Examples: Octopus (Devilfish), Dentalium (Tusk shells), Doris (Sea lemon), Pila (Apple snail) etc.

Echinodermata

Echinodermata is a phylum of marine invertebrates which includes starfishes, sea urchins, brittlestars, crinoids, and body of water cucumbers. They have fivefold radial symmetry, a calcareous skeleton, and tube feet operated past fluid pressure.

- These are the exclusively marine animals and triploblastic and coelomate in nature.
- A water vascular system is present. For food capturing and locomotion, they use tube anxiety.
- Excretory organs are absent.
- Echinoderms are sexually dimorphic and release their eggs and sperm cells into the water; fertilization is external
- The nervous system in these animals is a relatively simple structure with a nerve ring at the heart and five radial fretfulness extending outward along the arms.
- Regeneration power is well developed.
- They are known every bit spiny-skinned animals.

Examples: Starfish, ocean cucumber, brittle star, ocean urchins etc.

Chordata

Chordata is a large phylum of animals that includes the vertebrates together with the sea squirts and lancelets. They are distinguished by the possession of a notochord at some stage during their evolution.

- The organisms of this phylum have three characteristics during whatever stages of their life, the stages are as follows:
  - A skeletal rod, the notochord present at some stages in their life cycle.
  - Nerve cord dorsal and tubular.
  - Pharyngeal gills slits present at some stages of life and they may or may not be functional.

- There are some classes nowadays in this phylum Chordata, they are described below:

1. Pisces

- - - These are poikilothermic and aquatic animals.
    - Skins are moist and scaly usually.
    - Respiration takes place past gills.
    - Locomotion takes identify by fins.
    - The heart is two-chambered.
    - The body is streamlined.
    - Sense organs are functional in water.

Example: Labeo (Indian carp), sea horse, Dogfish (Shark), Catfish, Gambusia, electric ray, Sawfish etc.

2. Amphibians

- - - They are semi-aquatic, air and water breathing, carnivorous, cold-blooded, oviparous, tetrapod vertebrates.
    - Pare is soft, moist and glandular. Pigment cells are present (Chromatophores).
    - The exoskeleton is absent.
    - Respiration takes place through the lungs, skin and mouth linings.
    - The natural language is protrusible.
    - The heart is 3-chambered having two auricles and one ventricle.
    - Larva is a polliwog that metamorphoses into an adult.

Example: Proteus, Siren, Hyla, frog, toad etc.

3. Reptilia

- - - Predominantly terrestrial, creeping or burrowing, generally carnivorous, air-breathing, cold-blooded, oviparous and tetrapodal animals.
    - Skin is dry, cornified and devoid of glands.
    - Respiration by lungs throughout life.
    - The heart is iii-chambered. (Exception – crocodile)
    - No larval stages are seen.

Example: Tortoise, turtle, snake, crocodile, alligator etc.

four. Aves

- - - Air-breathing, oviparous, warm-blooded, bipedal, flying.
    - Feather is seen in their body.
    - Forelimbs are modified as wings.o Skin is dry out and devoid of glands.
    - Practise not have teeth instead have beaks.
    - Four chambered hearts are seen.
    - Lungs are nowadays for respiration. Alveolus is also nowadays.
    - The urinary bladder is absent-minded.
    - Only one ovary is found in the female individual.

Example: Corvus (Crow), Emu, Kiwi, Peacock, sparrow etc.

five. Mammalia

- - - Mostly terrestrial, air-animate, warm-blooded, viviparous vertebrates.
    - The presence of hair is seen in the body.
    - The skin contains sweat and the sebaceous gland.
    - Females have mammary glands with teats producing milk.
    - A diaphragm present between the abdominal and thoracic cavity is a unique feature of merely mammals.
    - Lungs are present for respiration.
    - The heart is four-chambered.
    - This class can be subdivided into three sub-classes, they are as follows:
      1. Prototheria: These are primitive reptiles. Egg-laying mammals. Example: Platypus or duckbill.
      2. Metatheria: These are pouched mammals. The pouch is called Marsupium. Young born in the very immature stage and stays in this pouch for some time. Examples: Kangaroo, koala etc.
      3. Eutheria: Higher viviparous placental mammals.

Beast Kingdom Nautical chart

And then, this is all about the Animal Kingdom, Types of Phylum, their Characteristics . Become some practice of the aforementioned on our gratis Testbook App . Download At present!

Creature Kingdom Notes FAQs

Q.i What is coelom?

Ans.ane

The torso cavity which is lined by mesoderm is called coelom.

Q.2 What is Hemocyanin?

Ans.2

Hemocyanin is the copper-containing respiratory paint that is dissolved in the plasma of animals from phylum Mollusca.

Q.3 What is Phylum Porifera?

Ans.3

The simplest multicellular aquatic beast mostly constitute in the sea just simply those belonging to the family Spongillidae living in freshwater.

Q.4 Which is the largest phylum in the brute kingdom?

Ans.4

Arthropoda is the largest phylum in the animal kingdom.

Q.five Which is the second largest phylum?

Ans.v

Mollusca is the 2d largest Phylum in the Animal Kingdom.

Testbook Logo

Continue Reading in App

Source: https://testbook.com/learn/biology-animal-kingdom-types-of-phylum-their-characteristics/

Posted by: ferrellmoderithe.blogspot.com