- What are Nematomorpha commonly known as?
- A) Horsehair worms
- B) Ribbon worms
- C) Flatworms
- D) Roundworms
Answer: A) Horsehair worms
- Which of the following is a characteristic feature of Nematomorpha?
- A) Segmented body
- B) Long, slender body
- C) Parasitic lifestyle in adults
- D) Complex nervous system
Answer: B) Long, slender body
- What is the typical habitat of Nematomorpha?
- A) Freshwater and marine environments
- B) Terrestrial ecosystems
- C) Deep-sea environments
- D) Extreme deserts
Answer: A) Freshwater and marine environments
- The life cycle of Nematomorpha typically includes:
- A) Only free-living adults
- B) Parasitic larval stages in hosts
- C) Direct development
- D) Budding
Answer: B) Parasitic larval stages in hosts
- Nematomorpha larvae are primarily parasites of:
- A) Aquatic insects
- B) Mammals
- C) Reptiles
- D) Birds
Answer: A) Aquatic insects
- Adult Nematomorpha are known for their ability to:
- A) Swim rapidly
- B) Burrow into soil
- C) Parasitize multiple hosts
- D) Emerge from hosts upon maturity
Answer: D) Emerge from hosts upon maturity
- Which of the following structures do Nematomorpha use for attachment to their host?
- A) Suckers
- B) Hooks
- C) Adhesive glands
- D) Tentacles
Answer: C) Adhesive glands
- What is the main feeding strategy of adult Nematomorpha?
- A) Predation
- B) Filter feeding
- C) Absorbing nutrients from the environment
- D) Photosynthesis
Answer: C) Absorbing nutrients from the environment
- The reproductive strategy of Nematomorpha is generally:
- A) Asexual
- B) Sexual
- C) Parthenogenetic
- D) Fragmentation
Answer: B) Sexual
- Which of the following is a known genus of Nematomorpha?
- A) Caenorhabditis
- B) Gordius
- C) Nereis
- D) Pseudoceros
Answer: B) Gordius
- The anatomy of Nematomorpha includes which of the following features?
- A) Complex digestive system
- B) Lack of segmentation
- C) Closed circulatory system
- D) Jointed appendages
Answer: B) Lack of segmentation
- What is the typical length range of adult Nematomorpha?
- A) 1 to 5 mm
- B) 5 to 10 cm
- C) 10 to 100 cm
- D) Over 1 meter
Answer: C) 10 to 100 cm
- The body of Nematomorpha is typically:
- A) Flattened and broad
- B) Cylindrical and elongated
- C) Irregular and lobed
- D) Disc-shaped
Answer: B) Cylindrical and elongated
- Which of the following is a significant ecological role of Nematomorpha?
- A) Predator of fish
- B) Decomposer
- C) Parasite of insects
- D) Primary producer
Answer: C) Parasite of insects
- Hatching of Nematomorpha larvae usually occurs in:
- A) Host tissue
- B) Aquatic environments
- C) Soil
- D) On vegetation
Answer: B) Aquatic environments
- Which of the following adaptations aids Nematomorpha in their parasitic lifestyle?
- A) Thick cuticle
- B) Antigen masking
- C) High fecundity
- D) Complex life cycle
Answer: C) High fecundity
- Nematomorpha are primarily classified as:
- A) Ectoparasites
- B) Endoparasites
- C) Free-living organisms
- D) Mutualists
Answer: B) Endoparasites
- The larvae of Nematomorpha typically infect:
- A) Terrestrial mammals
- B) Aquatic insects
- C) Birds
- D) Reptiles
Answer: B) Aquatic insects
- Which of the following is NOT a characteristic of Nematomorpha?
- A) Thin cuticle
- B) Parasitic larvae
- C) Free-living adults
- D) Segmented body
Answer: D) Segmented body
- What is the primary mode of locomotion for adult Nematomorpha?
- A) Jet propulsion
- B) Crawling
- C) Swimming
- D) Burrowing
Answer: C) Swimming
- Hymenocephalida and Nematomorpha are primarily studied for their role in:
- A) Aquaculture
- B) Biodiversity
- C) Pest control
- D) Parasitology
Answer: D) Parasitology.
- Which of the following factors affects the distribution of Nematomorpha?
- A) Salinity
- B) Temperature
- C) Availability of hosts
- D) All of the above
Answer: D) All of the above.
- The mouth of Nematomorpha is primarily adapted for:
- A) Sucking fluids
- B) Grinding solid food
- C) Filtering small particles
- D) Absorbing nutrients
Answer: A) Sucking fluids.
- Which of the following is an important aspect of Nematomorpha’s ecological impact?
- A) They are major herbivores.
- B) They regulate insect populations.
- C) They are primary producers.
- D) They recycle nutrients in soil.
Answer: B) They regulate insect populations.
- What is the process by which Nematomorpha larvae leave their host?
- A) Metamorphosis
- B) Emergence
- C) Fission
- D) Budding
Answer: B) Emergence.
- Which structure is primarily responsible for feeding in adult Nematomorpha?
- A) Pharynx
- B) Stomach
- C) Digestive gland
- D) Mouthparts
Answer: A) Pharynx.
- The life cycle of Nematomorpha typically requires how many hosts?
- A) One
- B) Two
- C) Three
- D) Four
Answer: B) Two.
- What type of symbiotic relationship do Nematomorpha have with their hosts?
- A) Mutualistic
- B) Commensal
- C) Parasitic
- D) Neutral
Answer: C) Parasitic.
- Which of the following is a characteristic of Nematomorpha reproduction?
- A) Internal fertilization
- B) External fertilization
- C) Viviparity
- D) Oviparity
Answer: D) Oviparity.
- The primary research interest in Nematomorpha includes:
- A) Their reproductive strategies
- B) Their impact on host populations
- C) Their evolutionary history
- D) All of the above
Answer: D) All of the above.