Introduction to Medical Entomology
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Questions and Answers

What is the characteristic of arthropods that is mirrored in their body structure?

  • Ventral nerve cord
  • Radial symmetry
  • Segmented bodies
  • Bilateral symmetry (correct)

    • Which class of arthropods has a pair of legs per segment, and the first pair of legs is modified into stinging fangs?

  • Diplopoda
  • Crustacea
  • Chilopoda (correct)
  • Arachnida

    • What is the main function of the exoskeleton in arthropods?

  • To provide bilateral symmetry
  • To support the body and provide structure (correct)
  • To protect the body from predators
  • To aid in movement and locomotion

    • How many pairs of appendages are attached to the cephalothorax in Arachnida?

    <p>4 pairs</p> Signup and view all the answers

    What is the characteristic of Diplopoda that distinguishes them from other classes of arthropods?

    <p>They have 2 pairs of legs per segment</p> Signup and view all the answers

    Which class of arthropods does not have antennas?

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

    What is the characteristic of Crustacea that is not shared by other classes of arthropods?

    <p>None of the above</p> Signup and view all the answers

    How many classes of arthropods are mentioned in the text?

    <p>5</p> Signup and view all the answers

    What is the primary reason why insects are not as successful in aquatic environments?

    <p>They are unable to adapt to the osmo-regularity problem</p> Signup and view all the answers

    What is the main characteristic of an organism's body that is classified as an arthropod?

    <p>The presence of jointed appendages</p> Signup and view all the answers

    What is the primary function of an insect's exoskeleton?

    <p>To provide support for the insect's body</p> Signup and view all the answers

    What is the main advantage of an insect's small body size?

    <p>It allows them to survive in a variety of environments</p> Signup and view all the answers

    What is the primary reason why insects are able to adapt to different environments?

    <p>Their ability to change their behavior</p> Signup and view all the answers

    What is the primary purpose of insect taxonomy?

    <p>To understand the evolutionary relationships between insects</p> Signup and view all the answers

    What is the main characteristic of an insect's body that allows them to breathe?

    <p>The presence of a tracheal system</p> Signup and view all the answers

    What is the main reason why insects are able to dominate different ecosystems?

    <p>Their ability to adapt to different environments</p> Signup and view all the answers

    What is the primary characteristic of crustaceans?

    <p>The presence of a cephalothorax and abdomen</p> Signup and view all the answers

    What is the main reason why insects are able to survive in a variety of environments?

    <p>Their ability to adapt to different osmo-regularity levels</p> Signup and view all the answers

    What is the primary reason for using a classification system in entomology?

    <p>To cope with the vast number of insect species</p> Signup and view all the answers

    What is the term for the study of the structure of insects?

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

    What is the term for the scientific naming system used in entomology?

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

    Who is the developer of the classification system used in entomology?

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

    What is the term for the grouping of insects based on their characteristics?

    <p>Taxonomic group</p> Signup and view all the answers

    Why is the Law of Priority important in entomology?

    <p>To give credit to the scientist who first identified an insect</p> Signup and view all the answers

    What is the term for the study of the genetics of insects?

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

    What is the phylum that includes the majority of insects?

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

    Study Notes

    Introduction to Entomology

    • Entomology is a field of insect science that involves the study of insects
    • There are six disciplines in entomology: morphology, physiology, ecology, genetics, taxonomy, and medical entomology

    Classification of Organisms

    • Each living thing is placed in a group or category for classification and identification
    • The classification system used is based on Linnaeus' system: Kingdom, Filum, Kelas, Order, Familia, Genus, Species

    Why Use Classification System?

    • 80% of all animals in the world are from the phylum of Arthropods (1 million species)
    • Scientific naming is based on the binomial system, using Latin words with two words (e.g., Musca domestica Linnaeus)
    • The law of priority states that if a scientist has given a name to an organism for the first time, then the name will remain even if other scientists try to change the name

    Characteristics of Arthropods

    • Shared characteristics of arthropods include:
      • Segmented bodies
      • Exoskeleton (made from chitin)
      • Jointed appendages
      • Bilateral symmetry
      • Ventral nerve cord and dorsal circulatory system

    Main Classes of Arthropods

    • There are five main classes of arthropods:
      • Arachnida
      • Chilopoda
      • Diplopoda
      • Crustacea
      • Insecta

    Characteristics of Each Class

    • Arachnida:
      • 2 segmented bodies: cephalothorax and abdomen
      • 4 pairs of appendages attached to cephalothorax
      • No antenna
    • Chilopoda:
      • Head with eyes, mouth, and a pair of antennas
      • Entire segmented body with a pair of legs per segment
      • First pair of legs modified into stinging fangs for food gathering, defense, and protection
    • Diplopoda:
      • 2 pairs of appendages each segment
      • 2 segmented bodies: head and body
      • 2 pairs of antennas
    • Crustacea:
      • Mostly aquatic organisms
      • 2 body parts: cephalothorax and abdomen
      • 2 pairs of antennas
      • Usually 5 pairs of legs
    • Insecta:
      • 3 body parts: head, thorax, and abdomen
      • 3 pairs of legs and one pair of antenna
      • Wings (either 1 or 2 pairs) attached to the muscles in the thorax

    Success of Insects

    • Insects are the most successful organism due to their:
      • Capacity to reproduce
      • Small size
      • Exoskeleton with variety of appendages, mouth, and foot types
      • Variety of ways to breathe
      • Presence of wings
      • Various forms throughout life
      • Ease of adaptation

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    Description

    Learn about the basics of entomology, a field of insect science that encompasses various disciplines such as morphology, physiology, ecology, genetic, taxonomy, and medical entomology. This quiz is perfect for students of biomedical science and faculty of health sciences.

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