Homework Answers
Answer)
A) Cestoda:- characteristic feature of cestodes include tapelike segmented body. They are usually hermaphrodite, lack digestive tract and and donot have body cavity. Tapeworms belong to cestodes.
B) Nematoda:- characteristic features of nematodes include cylindrical body shape, they have a body cavity or pseudocoelom, the alimentary canal is distinct with mouth and anus.
C) Rotifera:- characteristic feature of rotifers include bilaterally symmetrical, has pseudocoelom and contains and external chitinous layer called lorica.
D) Platyhelminthes:- characteristic feature of platyhelminthes includes triploblastic, bilaterally symmetrical, body has a soft covering with or without cilia, body is dorsoventrally flattened.
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clearer picture
mals: Invertebrates and Vertebrates Annelida Deuterostome Mollusca Arthropoda Ecdysozoa Nematoda Bilateria Echinodermata Platyhelminthes Chordata Eumetazoa Porifera Cnidaria Lophotrochozoa Protostome 75. 76. 77. 78. 79. 80. 81. 82. 83. wo Matworms worms dams, was Spunoi sea stars. sea urchins jellyfish, coral, anemones crustaceans, insects, spiders RADIAL landets 85. 84. NO TISSUES 86. (feeding structure) 87. (shed exoskeleton) 88) The most ancient branch point in animal phylogeny (what distinguishes sponges from other animals) is that between having A) radial or...
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