Chromadorea MCQs

  • Which of the following is a characteristic feature of Chromadorea nematodes?
    • A) Amphids with circular openings
    • B) Presence of a pharyngeal bulb
    • C) Lack of a cuticle
    • D) Smooth body surface
      Answer: B) Presence of a pharyngeal bulb
  • What type of habitat do most Chromadorea nematodes inhabit?
    • A) Terrestrial
    • B) Aquatic
    • C) Both A and B
    • D) Airborne
      Answer: C) Both A and B
  • Which of the following is a representative genus of the Chromadorea class?
    • A) Trichuris
    • B) Caenorhabditis
    • C) Ascaris
    • D) Strongyloides
      Answer: B) Caenorhabditis
  • Chromadorea nematodes are primarily known for their:
    • A) Free-living lifestyle
    • B) Parasitic lifestyle
    • C) Both A and B
    • D) Symbiotic relationships
      Answer: C) Both A and B
  • Which of the following is a well-known parasitic Chromadorea nematode that infects humans?
    • A) Dirofilaria
    • B) Hookworm
    • C) Enterobius
    • D) Trichuris
      Answer: B) Hookworm
  • Chromadorea nematodes exhibit what type of body symmetry?
    • A) Bilateral symmetry
    • B) Radial symmetry
    • C) Asymmetrical
    • D) Pentaradial symmetry
      Answer: A) Bilateral symmetry
  • The body of Chromadorea nematodes is typically:
    • A) Segmented
    • B) Cylindrical and non-segmented
    • C) Flat
    • D) Leaf-like
      Answer: B) Cylindrical and non-segmented
  • The cuticle of Chromadorea nematodes is primarily composed of:
    • A) Chitin
    • B) Collagen
    • C) Keratin
    • D) Cellulose
      Answer: A) Chitin
  • What is the reproductive strategy of most Chromadorea nematodes?
    • A) Asexual reproduction
    • B) Sexual reproduction
    • C) Budding
    • D) Fragmentation
      Answer: B) Sexual reproduction
  • Which of the following is NOT a characteristic of Chromadorea nematodes?
    • A) Well-developed amphids
    • B) Smooth, annulated cuticle
    • C) Presence of a pharyngeal bulb
    • D) Segmented body
      Answer: D) Segmented body
  • The amphids in Chromadorea nematodes are generally:
    • A) Spiral or circular
    • B) Elongated
    • C) Absent
    • D) Simple slits
      Answer: A) Spiral or circular
  • Which of the following diseases is caused by a Chromadorea nematode?
    • A) Filariasis
    • B) Schistosomiasis
    • C) Lymphatic filariasis
    • D) Malaria
      Answer: A) Filariasis
  • The life cycle of Chromadorea nematodes usually includes:
    • A) Multiple larval stages
    • B) Direct development
    • C) Indirect development
    • D) Parasitic stages only
      Answer: A) Multiple larval stages
  • Which of the following Chromadorea nematodes is known to cause intestinal infections in humans?
    • A) Trichuris trichiura
    • B) Strongyloides stercoralis
    • C) Ascaris lumbricoides
    • D) Enterobius vermicularis
      Answer: C) Ascaris lumbricoides
  • What is a common method of transmission for Chromadorea parasites?
    • A) Airborne spores
    • B) Ingestion of eggs
    • C) Direct contact
    • D) Through vectors
      Answer: B) Ingestion of eggs
  • Which structure is primarily used for feeding in Chromadorea nematodes?
    • A) Pharynx
    • B) Amphids
    • C) Cloaca
    • D) Anus
      Answer: A) Pharynx
  • Which of the following is a significant agricultural pest from the Chromadorea class?
    • A) Meloidogyne
    • B) Ascaris
    • C) Enterobius
    • D) Dirofilaria
      Answer: A) Meloidogyne
  • Chromadorea nematodes are known for their ability to:
    • A) Regenerate lost body parts
    • B) Produce toxins
    • C) Survive extreme environmental conditions
    • D) Change colors
      Answer: C) Survive extreme environmental conditions
  • Which group of Chromadorea nematodes is primarily found in soil?
    • A) Rhabditida
    • B) Tylenchida
    • C) Both A and B
    • D) None of the above
      Answer: C) Both A and B
  • The body of Chromadorea nematodes is typically:
    • A) Flat and ribbon-like
    • B) Round and elongated
    • C) Cylindrical and tapered
    • D) Thick and globular
      Answer: C) Cylindrical and tapered
  • What is the primary diet of free-living Chromadorea nematodes?
    • A) Bacteria
    • B) Algae
    • C) Organic matter
    • D) All of the above
      Answer: D) All of the above
  • Which of the following genera is NOT part of Chromadorea?
    • A) Caenorhabditis
    • B) Rhabditis
    • C) Trichinella
    • D) Meloidogyne
      Answer: C) Trichinella
  • Chromadorea nematodes can be distinguished from other classes by their:
    • A) Thick cuticle
    • B) Pharyngeal bulb
    • C) Both A and B
    • D) Smooth body surface
      Answer: C) Both A and B
  • In Chromadorea nematodes, the males are usually:
    • A) Larger than females
    • B) Smaller than females
    • C) Same size as females
    • D) Always hermaphroditic
      Answer: B) Smaller than females
  • What is the primary function of the cuticle in Chromadorea nematodes?
    • A) Protection
    • B) Movement
    • C) Respiration
    • D) Digestion
      Answer: A) Protection
  • Which of the following nematodes is primarily found in the intestines of mammals?
    • A) Rhabditis
    • B) Strongyloides
    • C) Caenorhabditis
    • D) Ascaris
      Answer: D) Ascaris
  • The eggs of Chromadorea nematodes are typically:
    • A) Large and spherical
    • B) Small and elongated
    • C) Oval and smooth
    • D) Irregular and flat
      Answer: B) Small and elongated
  • Chromadorea nematodes are commonly studied in laboratories due to their:
    • A) Simple body structure
    • B) Fast reproductive rate
    • C) Both A and B
    • D) Their role in human health
      Answer: C) Both A and B
  • What is the primary sensory structure in Chromadorea nematodes?
    • A) Pharynx
    • B) Amphids
    • C) Cloaca
    • D) Anus
      Answer: B) Amphids
  • Which class do Chromadorea nematodes belong to within the phylum Nematoda?
    • A) Enoplea
    • B) Chromadorea
    • C) Secernentea
    • D) Spiruria
      Answer: B) Chromadorea

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