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crustacean    音标拼音: [krəst'eʃən]
a. 甲壳类的
n. 甲壳类

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  • Crustacean - Wikipedia
    Most crustaceans are free-living aquatic animals, but some are terrestrial (e g woodlice, sandhoppers), some are parasitic (e g Rhizocephala, fish lice, tongue worms) and some are sessile (e g barnacles) The group has an extensive fossil record, reaching back to the Cambrian
  • Crustacean | Definition, Characteristics, Evolution, Facts | Britannica
    crustacean, any member of the subphylum Crustacea (phylum Arthropoda), a group of invertebrate animals consisting of some 45,000 species distributed worldwide Crabs, lobsters, shrimps, and wood lice are among the best-known crustaceans, but the group also includes an enormous variety of other forms without popular names
  • What are Crustaceans? – INHS Crustacean Collection
    Crustaceans have evolved a variety of specialized body forms and behaviors to cope with both aquatic and terrestrial environments; however, all crustaceans share several characteristics: a hard exoskeleton, jointed, paired appendages, and three body regions (head, thorax, and abdomen)
  • What Is A Crustacean? The Ultimate Guide To Crustaceans
    A crustacean is an invertebrate animal with a hard exoskeleton, segmented body and jointed legs Most crustaceans are fully aquatic, although some, including many crabs, are semi-aquatic, and others, such as woodlice, are fully terrestrial (land-dwelling)
  • CRUSTACEAN Definition Meaning - Merriam-Webster
    The meaning of CRUSTACEAN is any of a large class (Crustacea) of mostly aquatic mandibulate arthropods that have a chitinous or calcareous and chitinous exoskeleton, a pair of often much modified appendages on each segment, and two pairs of antennae and that include the lobsters, shrimp, crabs, wood lice, water fleas, and barnacles
  • Crustaceans - A-Z Animals
    Crustaceans are a large, diverse group of invertebrates of the phylum Arthropoda, whose classification also includes spiders, mites, scorpions and insects Scientists believe that the number of crustacean species worldwide is between 50,000 and 67,000
  • Crustaceans - U. S. National Park Service
    Crustaceans have a couple of defining qualities They have segmented bodies with hardened shells which are regularly shed Their limbs have two branches to them, and they have two pairs of antennae Six classes make up the subphylum Crustacea and are by far the most dominant arthropod on earth
  • 9 Characteristics of Crustaceans - Wildlife Informer
    Distinct characteristics of a crustacean is their hard exoskeleton and jointed appendages Crustaceans are found in both fresh and saltwater environments and can range in size from microscopic to over two feet long
  • Crustacean - Definition, Types, List, Anatomy, and Picture
    What is a crustacean in biology What does it eat Learn its examples, including habitat, organ systems, reproduction, and life cycle with images
  • Crustacean - Aquatic, Arthropod, Exoskeleton | Britannica
    The most typical larva is called a nauplius Crustaceans play many roles in aquatic ecosystems The basic crustacean body consists of somites, acron, telson, appendages, carapace, and an exoskeleton





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