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Questions and Answers

What is the primary function of fibroblast cells in connective tissue?

  • Break down bone for remodeling
  • Synthesize fibers of connective tissue (correct)
  • Generate and transmit electrical impulses
  • Store triglycerides for insulation
  • Which type of connective tissue surrounds blood vessels and provides stability?

  • Bone tissue
  • Areolar (loose) connective tissue (correct)
  • Fibrous (dense) connective tissue
  • Adipose tissue
  • Which cell type is responsible for breaking down bone during remodeling?

  • Osteoclasts (correct)
  • Osteocytes
  • Osteoblasts
  • Fibroblasts
  • What characterizes smooth muscle tissue?

    <p>Involuntary and unstriated</p> Signup and view all the answers

    Which type of cartilage is found in human ears and intervertebral discs?

    <p>Elastic cartilage</p> Signup and view all the answers

    What is the main component of blood that functions as a fluid matrix?

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

    Which type of muscle tissue is characterized by intercalated discs?

    <p>Cardiac muscle</p> Signup and view all the answers

    What structure in bone is responsible for maintaining bone health?

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

    Which structure in birds stores food temporarily and initiates the digestion process?

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

    What is a unique feature of mammals compared to other vertebrates?

    <p>Single jaw bone: dentary</p> Signup and view all the answers

    What function does the gizzard serve in birds?

    <p>Grinds food and aids digestion</p> Signup and view all the answers

    Which of the following characteristics is NOT associated with reptiles?

    <p>Four-chambered heart</p> Signup and view all the answers

    What is the primary function of the lungs in vertebrates?

    <p>Exchange oxygen and carbon dioxide</p> Signup and view all the answers

    Which of the following statements about feathers is true?

    <p>They are modified scales that assist in insulation.</p> Signup and view all the answers

    How does the metabolic rate of birds compare to that of other vertebrates?

    <p>Higher due to being endothermic.</p> Signup and view all the answers

    Which of the following is NOT a characteristic of mammalian evolution?

    <p>Presence of feathers</p> Signup and view all the answers

    What is the role of the cloaca in vertebrates?

    <p>Waste elimination</p> Signup and view all the answers

    Which vertebrate group lays eggs that are laid on land?

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

    What is the primary outcome of gastrulation in embryonic development?

    <p>Formation of germ layers</p> Signup and view all the answers

    What are the key features of the cleavage stage in embryonic development?

    <p>Mitosis with no cell growth</p> Signup and view all the answers

    Which structure is formed during the blastula stage?

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

    What are choanocytes primarily responsible for in Porifera?

    <p>Capture and ingest food</p> Signup and view all the answers

    What defines acoelomates among bilaterally symmetrical animals?

    <p>Absence of a body cavity</p> Signup and view all the answers

    Which organ is primarily responsible for feeding in mollusks?

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

    What type of symmetry do Cnidarians exhibit?

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

    Which of the following is a characteristic feature of gastropods?

    <p>A foot and mantle for locomotion</p> Signup and view all the answers

    What function does the osculum serve in sponges?

    <p>Expels water from the sponge</p> Signup and view all the answers

    What is the main function of the clitellum in earthworms?

    <p>Regulates reproduction and organogenesis</p> Signup and view all the answers

    What is the significance of gemmules in freshwater sponges?

    <p>They aid in reproduction under stress</p> Signup and view all the answers

    Which structure in crayfish provides protection for vital organs?

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

    Which anatomical structure in clams is responsible for expelling waste?

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

    What is the defining feature of bivalves?

    <p>Two-part shell</p> Signup and view all the answers

    What type of circulatory system is found in cephalopods like octopuses and squids?

    <p>Closed circulatory system</p> Signup and view all the answers

    What is a key trait of the planarian's anatomy?

    <p>Centralized nervous system</p> Signup and view all the answers

    How do insects primarily breathe?

    <p>Via spiracles and tracheae</p> Signup and view all the answers

    Which of the following is a defining characteristic of annelids?

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

    What type of movement is primarily associated with nematodes?

    <p>Whip-like motion</p> Signup and view all the answers

    The purpose of the gizzard in earthworms is to:

    <p>Grind food into smaller pieces</p> Signup and view all the answers

    Which feature is NOT typical of echinoderms?

    <p>Presence of notochord</p> Signup and view all the answers

    What is a key characteristic that distinguishes jawed fishes from jawless fishes?

    <p>Hinged jaws for grasping food</p> Signup and view all the answers

    What class of amphibians includes salamanders?

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

    What adaptation allows amphibians to be the first land vertebrates?

    <p>Lungs for breathing air</p> Signup and view all the answers

    What is the role of Malpighian tubules in insects?

    <p>Excrete waste and assist in osmoregulation</p> Signup and view all the answers

    The swim bladder in ray-finned fish is primarily used for:

    <p>Maintaining buoyancy</p> Signup and view all the answers

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