Invertebrate Animals
Invertebrate definition: 1. An animal with no spine: 2. An animal with no spine:. Cambridge Dictionary +Plus; My profile +Plus help; Log out; Dictionary. Clear explanations of natural written and spoken English. English; Learner’s Dictionary. Plants & animals - general words. © 1996-2015 National Geographic Society. © 2015-2020 National Geographic Partners, LLC. All rights reserved. Learn about our nonprofit work at NationalGeographic.org.
Invertebrates And Vertebrates - Its DifferencesIn the animal kingdom, animals have been classified into two main categories based on the presence or absence of the backbone or a spinal column. Happy race month indy. Apart from this, there are more differences between vertebrates and invertebrates. Romance of the three kingdoms 13 gamestop. Read on to explore how these classes of organisms differ from each other.InvertebratesInvertebrates can be simply identified as animals that don’t have a backbone. They are found almost everywhere, from the hottest deserts and the deepest water bodies to the darkest caves and tallest mountains.
As stated before, invertebrates are the animals which mainly lack a skeletal system and other developed organs. This means most of them do not possess a rigid body structure and as a result, cannot grow very large. Anatomically, they consist of an open circulatory system where blood flows in an open cavity. Most invertebrates possess a simple respiratory system, with the most common form being gills and trachea.To compensate for the lack of an internal skeleton, most invertebrates have an external skeleton that protects their soft, inner body. This material is usually made from chitin, a derivative of glucose.Invertebrates constitute more than 97 per cent of all species in the. The number of invertebrates exceeds more than 2 million species, with more being found almost every other day.Prominent examples include annelids, arthropods, bivalves, coelenterates, echinoderms, squid, sponges, snails, and octopuses. Some invertebrates possess far superior traits and features to that of vertebrates. For instance, did you know the largest eye in the animal kingdom belongs to the colossal squid – a gigantic invertebrate?Read More: VertebratesVertebrates are the most advanced of species in the animal kingdom.
Members possess a well defined internal skeleton system, which includes a backbone. In humans, the spinal cord runs along the body between the caudal and cranial regions connecting to the nerve tissues. Vertebrates also have more complex and specialized organ systems when compared to invertebrates. Organ systems like the respiratory systems are quite complex, with many additional functions. Even the sensory organs are more advanced, which helps vertebrates adapt to their respective environment.On average, the overall count of vertebrates existing on planet earth is around 57,000 to 58,000.Examples of vertebrate include all chordates such as mammals, birds, fish, reptiles, and amphibians etc. The main characteristics of the vertebrates are that members have bilaterally symmetrical bodies and a brain enclosed by a skull. Differences Between Invertebrates And Vertebrates.
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invertebrate
without a backbone; without strength of character: She’s an invertebrate who will lie about anything to stay out of trouble.Not to be confused with:
in·ver·te·brate
(ĭn-vûr′tə-brĭt, -brāt′)adj.invertebrate
(ɪnˈvɜːtɪbrɪt; -ˌbreɪt) nin•ver•te•brate
(ɪnˈvɜr tə brɪt, -ˌbreɪt)adj. 1.
in·ver·te·brate
(ĭn-vûr′tə-brĭt, ĭn-vûr′tə-brāt′)invertebrate
Noun | 1. | invertebrate - any animal lacking a backbone or notochord; the term is not used as a scientific classification animal, animate being, beast, creature, fauna, brute - a living organism characterized by voluntary movement arthropod - invertebrate having jointed limbs and a segmented body with an exoskeleton made of chitin zoophyte - any of various invertebrate animals resembling a plant such as a sea anemone or coral or sponge parazoan, poriferan, sponge - primitive multicellular marine animal whose porous body is supported by a fibrous skeletal framework; usually occurs in sessile colonies cnidarian, coelenterate - radially symmetrical animals having saclike bodies with only one opening and tentacles with stinging structures; they occur in polyp and medusa forms comb jelly, ctenophore - biradially symmetrical hermaphroditic solitary marine animals resembling jellyfishes having for locomotion eight rows of cilia arranged like teeth in a comb worm - any of numerous relatively small elongated soft-bodied animals especially of the phyla Annelida and Chaetognatha and Nematoda and Nemertea and Platyhelminthes; also many insect larvae woodborer, borer - any of various insects or larvae or mollusks that bore into wood rotifer - minute aquatic multicellular organisms having a ciliated wheel-like organ for feeding and locomotion; constituents of freshwater plankton mollusc, mollusk, shellfish - invertebrate having a soft unsegmented body usually enclosed in a shell phoronid - hermaphrodite wormlike animal living in mud of the sea bottom bryozoan, moss animal, polyzoan, sea mat, sea moss - sessile aquatic animal forming mossy colonies of small polyps each having a curved or circular ridge bearing tentacles; attach to stones or seaweed and reproduce by budding ectoproct - sessile mossy aquatic animal having the anus of the polyp outside the crown of tentacles entoproct - any of various moss-like aquatic animals usually forming branching colonies; each polyp having a both mouth and anus within a closed ring of tentacles Symbion pandora - only known species of Cycliophora; lives symbiotically attached to a lobster's lip by an adhesive disk and feeding by means of a hairy mouth ring; its complex life cycle includes asexual and sexual phases brachiopod, lamp shell, lampshell - marine animal with bivalve shell having a pair of arms bearing tentacles for capturing food; found worldwide peanut worm, sipunculid - small unsegmented marine worm that when disturbed retracts its anterior portion into the body giving the appearance of a peanut echinoderm - marine invertebrates with tube feet and five-part radially symmetrical bodies invertebrate foot, foot - any of various organs of locomotion or attachment in invertebrates peristome - region around the mouth in various invertebrates exoskeleton - the exterior protective or supporting structure or shell of many animals (especially invertebrates) including bony or horny parts such as nails or scales or hoofs |
Adj. | 1. | invertebrate - lacking a backbone or spinal column; 'worms are an example of invertebrate animals' zoological science, zoology - the branch of biology that studies animals vertebrate - having a backbone or spinal column; 'fishes and amphibians and reptiles and birds and mammals are verbetrate animals' |
invertebrate
nounseecrustaceans, snails, slugs and other gastropods, spiders and other arachnidsInvertebrates
invertebrate
[ɪnˈvɜːtɪbrɪt]invertebrate
[ɪnˈvɜːrtɪbrət]in inverted commas → entre guillemetsinverted snobbery n → snobismemà rebours
invertebrate
invertebrate
[ɪnˈvɜːtɪbrɪt]n & adj → invertebrato/ainvertebrate
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