Animal Kingdom Diversity and Classification
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What is a distinguishing feature of the subphylum Chelicerata?

  • They have a segmented body divided into three main parts.
  • They possess a distinct head with a pair of antennae.
  • Their circulatory system is closed, using veins and arteries.
  • Their first pair of appendages are specialized mouthparts called chelicerae. (correct)

    • How do terrestrial chelicerates primarily exchange gases?

  • Using book lungs or tracheae. (correct)
  • By diffusion through their exoskeleton.
  • Through their gills.
  • With specialized veins.

    • What role do chelicerae play in spiders specifically?

  • They are primarily used for locomotion.
  • They are modified to inject venom into prey. (correct)
  • They assist in the excretion process.
  • They serve as sensory appendages.

    • What type of circulatory system do chelicerates have?

    <p>An open circulatory system with a tube-like heart.</p> Signup and view all the answers

    Which of the following animals is NOT part of the subphylum Chelicerata?

    <p>Crayfish</p> Signup and view all the answers

    What is the primary function of muscle tissue in animals?

    <p>Facilitate locomotion and movements within the body</p> Signup and view all the answers

    What type of cells do most animals possess?

    <p>Diploid somatic cells and haploid gamete cells</p> Signup and view all the answers

    Which statement is true regarding animal reproduction?

    <p>Most animals undergo sexual reproduction, with some exceptions.</p> Signup and view all the answers

    What distinguishes animals from other kingdoms like fungi and bacteria regarding reproduction?

    <p>Sexual reproduction is more common in animals.</p> Signup and view all the answers

    During sexual reproduction, what happens after fertilization?

    <p>Cells divide and differentiate to form tissues.</p> Signup and view all the answers

    What is a unique feature of male bees, wasps, and ants in terms of cell type?

    <p>They have haploid cells resulting from fertilization.</p> Signup and view all the answers

    What role does epithelial tissue play in the animal body?

    <p>Covers internal and external surfaces of organs</p> Signup and view all the answers

    What primarily composes connective tissue?

    <p>Cells and extracellular material with organic and inorganic components</p> Signup and view all the answers

    Which of the following animals is an example of an asymmetrical animal?

    <p>Sponge</p> Signup and view all the answers

    What type of symmetry do sea anemones exhibit?

    <p>Radial</p> Signup and view all the answers

    How many embryonic germ layers do diploblast animals have?

    <p>Two</p> Signup and view all the answers

    Which layer is not present in diploblasts?

    <p>Mesoderm</p> Signup and view all the answers

    What is the primary characteristic of animals with bilateral symmetry?

    <p>Only one plane of symmetry</p> Signup and view all the answers

    What is the purpose of the coelom in triploblast animals?

    <p>It houses and protects internal organs.</p> Signup and view all the answers

    Which of the following is a characteristic feature of triploblast animals?

    <p>They develop three germ layers.</p> Signup and view all the answers

    Which of the following animal types develops from the mesoderm?

    <p>Goat</p> Signup and view all the answers

    What type of digestive system do most flatworms have?

    <p>Incomplete digestive system with a single opening used for intake and expulsion</p> Signup and view all the answers

    How do cestodes obtain their nutrients?

    <p>By absorbing nutrients directly across their body wall</p> Signup and view all the answers

    Which system is responsible for excretion and regulation of dissolved salts in flatworms?

    <p>Excretory system</p> Signup and view all the answers

    What limits the thickness of flatworms' bodies?

    <p>The need for gas and nutrient exchange via diffusion</p> Signup and view all the answers

    What reproductive strategy is common among some flatworm groups?

    <p>Asexual reproduction allowing regeneration from parts</p> Signup and view all the answers

    Which class of flatworms includes free-living marine species?

    <p>Turbellaria</p> Signup and view all the answers

    What distinguishes the nervous system of flatworms?

    <p>It features a pair of nerve cords with a ganglion at the anterior end</p> Signup and view all the answers

    What characteristic is common among most flatworm species in terms of reproduction?

    <p>They are monoecious, possessing both male and female reproductive organs</p> Signup and view all the answers

    What is the primary characteristic that distinguishes sponges from more complex animals?

    <p>Sponges lack true tissues.</p> Signup and view all the answers

    What do sponges primarily rely on for their feeding and gas exchange?

    <p>Intimate contact with water.</p> Signup and view all the answers

    How do the body structures of sponges facilitate their feeding?

    <p>By dedicating much of their structure to moving water.</p> Signup and view all the answers

    What is the main difference in leg structure between Hexapoda and Myriapoda?

    <p>Hexapoda typically have six legs while Myriapoda can have many more.</p> Signup and view all the answers

    What is the term for the large central cavity within a sponge?

    <p>Spongocoel.</p> Signup and view all the answers

    Which of the following statements about crustaceans is true?

    <p>Crustaceans have an exoskeleton often reinforced with calcium carbonate.</p> Signup and view all the answers

    Which group of animals displays the most primitive form of multicellularity?

    <p>Sponges.</p> Signup and view all the answers

    Which of the following statements is true about cnidarians?

    <p>They are the simplest animals with true tissues.</p> Signup and view all the answers

    Which of the following best describes the respiratory system in insects?

    <p>It functions through a series of tracheae.</p> Signup and view all the answers

    What is the role of the osculum in a sponge's body structure?

    <p>It allows water to flow out of the sponge.</p> Signup and view all the answers

    What is the primary habitat preference for Myriapoda?

    <p>Humid terrestrial environments.</p> Signup and view all the answers

    How is the body structure of crustaceans primarily organized?

    <p>Into a head, thorax, and cephalothorax.</p> Signup and view all the answers

    Which of the following best describes the majority of animal species on Earth?

    <p>Invertebrate animals, making up about 95 percent.</p> Signup and view all the answers

    What distinguishes serial hermaphroditism in certain crustacean species?

    <p>The ability to switch from producing sperm to ova.</p> Signup and view all the answers

    Which of the following statements about insects is correct?

    <p>Insects have developed digestive and respiratory systems.</p> Signup and view all the answers

    What type of diet do most crustaceans primarily follow?

    <p>Carnivorous with some being detritivores or filter feeders.</p> Signup and view all the answers

    Study Notes

    Animal Kingdom Diversity

    • Animals are multicellular eukaryotes
    • All animals are heterotrophic; they obtain energy by consuming other organisms
    • Most animals are motile, at least during some stage of their life cycle
    • Animals exhibit a wide variety of body plans and structures
    • Animal classification systems are based on morphology, embryological development, and genetic makeup

    Features of the Animal Kingdom

    • Eukaryotic and multicellular
    • Specialized tissues develop in most animals
    • Most animals are motile
    • Heterotrophic nutrition
    • Reproduction mainly sexual, but asexual methods also exist

    Animal Reproduction and Development

    • Most animals reproduce sexually, involving the fusion of gametes
    • Diploid body cells and haploid gametes
    • Modes of sexual reproduction vary
    • Fertilization may be internal or external
    • Development may involve metamorphosis

    Classification Features of Animals

    • Body symmetry (asymmetrical, radial, bilateral)
    • Tissue layers (diploblastic, triploblastic)
    • Body cavity (acoelomate, pseudocoelomate, coelomate)
    • Embryological development (protostomes, deuterostomes)

    Sponges (Porifera)

    • Simplest animals
    • Lack true tissues and organs
    • Mostly marine
    • Filter feeders; water flows through pores into a central cavity
    • Support structures of spicules or fibers

    Cnidarians (Cnidaria)

    • Radial or biradial symmetry
    • Diploblastic
    • Two body forms (polyp and medusa)
    • Gastrovascular cavity
    • Stinging cells (cnidocytes)
    • Mostly marine

    Flatworms (Platyhelminthes)

    • Acoelomate
    • Triploblastic
    • Bilateral symmetry
    • Incomplete digestive system
    • Mostly parasitic (some free-living)

    Roundworms (Nematoda)

    • Pseudocoelomate
    • Triploblastic
    • Bilateral symmetry
    • Complete digestive system

    Arthropods

    • Coelomate
    • Triploblastic
    • Bilateral symmetry
    • Jointed appendages
    • Exoskeleton (chitinous)
    • Extensive diversity of body forms and lifestyles

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    Related Documents

    Chapter 15: Diversity of Animals PDF

    Description

    Explore the fascinating diversity of the Animal Kingdom with this quiz. Learn about their characteristics, reproduction methods, and classification based on body plan and genetic makeup. Test your understanding of animal features and their roles in the ecosystem.

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