- 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