1. What animals are sea cucumbers and jellyfish?The above nonsense It is a class of echinoderms and a class of scyphozoa. Sea cucumbers and sea stars are close relatives, but they are five-radial symmetrical and cylindrical. You can search Baidu for this kind of question. 2. What are the classifications of organisms?The general classification level of organisms: Kingdom, Phylum, Class, Order, Family, Genus, Species. The specific classification level of organisms: Superkingdom, Kingdom, Phylum, Subphylum, Superclass, Class, Subclass, Superorder, Order, Subborder, Superfamily (-oidae), Family (-idae), Subfamily (-inae), Genus, Subgenus, Species, Subspecies. Organisms are composed of prokaryotes and eukaryotes, that is, animals, plants, and microorganisms, and their characteristic is that they can carry out metabolism. Plants include algae, mosses, ferns, seed plants (herbs belong to seed plants), and microorganisms; Animals include mammals, amphibians, marine animals, and microorganisms; Microorganisms include fungi, bacteria, mycoplasma, chlamydia, rickettsia, spirochetes, actinomycetes, and viruses. The basic substances and main structures of living things (except viruses) The basic substances in biological cells are: water, nutrients, mitochondria, nucleic acids, and plants also have chlorophyll. The main structures of biological cells are: cell membrane, cell nucleus, cytoplasm, and plants also have cell walls, chloroplasts, and vacuoles (blastocysts). 3. How are some organisms classified in the biological world? Urgent!!Kelp: Phaeophyceae, Phaeophyceae, Laminariales, Laminariaceae, Laminaria Wall mosses: Bryophyta Azolla: Pteridophyta, Pteridophyta, Pteridophyta, Pteridales, Azolla family, Azolla genus Cycads: Gymnosperms, Cycadales, Cycadaceae Rose: Rosaceae, Rosa genus Corn: Monocots, Poaceae Jellyfish: Phylum Cnidaria, Class Scyphozoa, Order Rhizostomidae, Family Rhizostomidae, Genus Echinodon Squid: Phylum Mollusca, Class Cephalopoda, Subclass Dibranchia, Order Decapoda Earthworms: Annelida, Oligochaeta Spiders: Phylum Arthropoda, Class Arachnida, Order Araneae Crabs: Arthropoda, Crustacea, Decapoda, Reptilia Locusts: Arthropoda, Insecta, Orthoptera, Acrididae Eel: Phylum Chordata, Subphylum Vertebrata, Class Pisces, Subclass Osteichthyes, Family Synbranchidae Toad: Chordata, Amphibia, Anura, Toadidae Turtle: Phylum Chordata, Class Reptilia, Order Testudinata Duck: Chordata, Aves, Anseriformes, Anatidae, Genus Duck Whales: Phylum Chordata, Class Mammalia, Order Cetacea 4. Are jellyfish considered shellfish? Are phylum Cnidaria also shellfish?Jellyfish belongs to the phylum Cnidaria, class Scyphozoa, order Rhizostomidae, family Rhizostomidae, genus Acarina. Shellfish belong to the phylum Mollusca, and different shellfish belong to three different classes in the phylum Mollusca - Gastropoda, Bivalvia, and Cephalopoda. Gastropoda usually have a spiral shell, but the shell's shape varies a lot. Bivalvia, also known as Bivalvia or Axepoda, is the class with the most species and the greatest economic value among all classes in the phylum Mollusca. It is characterized by having a shell on each side of the body (some species such as abalone have one shell) Grade 5, Grade 8 Biology (Classification of Plants)Plants do not have these major distinctions, only animals do. |
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