1. Echinoderms and vertebrates are more closely related than arthropods and vert
ID: 98115 • Letter: 1
Question
1. Echinoderms and vertebrates are more closely related than arthropods and vertebrates. 2. The origin of both craniates and gnathostomes involved duplication of Hox genes. 3. Animals have a cranium, fur, and mammary glands. Multiple choice: 4. Which of the following is not a general characteristic of arthropods? a) Arthropods have an open circulatory system b) Arthropods have well-developed sensory organs c) Arthropod bodies are completely covered by cuticle d) Terrestrial arthropods have internal structures specialized for gas exchange e) Most arthropod sensory organs are concentrated at the posterior end 5. Which of the following pairings of phylum and description is incorrect? a) Echinodermata-bilateral symmetry as a larva, coelomate b) Nematoda- roundworms, pseudocoelomate c) Platyhelminthes flatworms, gastrovascular cavity, acoelomate d) Porifera -gastrovascular cavity, coelomate 6. Vertebrate jaws evolved from a) gill supports b) ribs c) Kales d) teeth 7. Among living organism members of the class aves only have a) a four chambered heart b) amniote eggs c) feather d)a cloaca 8. What common characteristic do annelids and cephalopods have that other invertebrate do not? 9. what are amphibian's limitations to living a terrestrial lifestyle and what adaptation did reptiles makes to be able to occupy a greater variety of habitats than amphibians?Explanation / Answer
1. Correct
3. Incorrect. The correct statement is : Mammals have a cranium, fur and mammary glands.
5. D) Porifera - gastrovascular cavity, coelomate
6. A) Gill supports
7. C) Feathers
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