Question

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 bilateral symmetry. B) a well-defined head or no head. C) diploblastic or triploblastic embryos. D) true tissues or no tissues. 89) Which of the following is (are) unique to animals? A) cells that have mitochondria B) the structural carbohydrate, chitin C) nervous conduction and muscular movement D) heterotrophy E) both A and C 90) Among the characteristics unique to animals is A) gastrulation B) multicellularity. C) sexual reproduction. D) flagellated sperm. E) heterotrophic nutrition.

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Answer 1

88. This is adiagram of a hylogenetic treee showing different animal phylum. As we can see in the figure the most ancient ancestor diveregd into two group. One og these growu develop into sponges with No tissues. The other offspring further evolved into a group of animal phylum all having true tissues.

The answer is C.