- Nanaloricida belongs to which phylum?
- A) Arthropoda
- B) Loricifera
- C) Nematoda
- D) Annelida
Answer: B) Loricifera
- What is the primary habitat of Nanaloricida?
- A) Freshwater
- B) Deep-sea sediments
- C) Terrestrial soil
- D) Coral reefs
Answer: B) Deep-sea sediments
- Which of the following structures is characteristic of Nanaloricida?
- A) Lorica (protective outer casing)
- B) Shell
- C) Tentacles
- D) Jointed appendages
Answer: A) Lorica (protective outer casing)
- What kind of body symmetry do Nanaloricida exhibit?
- A) Bilateral symmetry
- B) Radial symmetry
- C) Asymmetry
- D) Pentamerous symmetry
Answer: A) Bilateral symmetry
- Nanaloricida are primarily found in which type of environment?
- A) Desert
- B) Marine sediments
- C) Tropical rainforests
- D) Alpine regions
Answer: B) Marine sediments
- The name “Loricifera” is derived from the Latin word “lorica,” which refers to what?
- A) A type of armor
- B) A swimming appendage
- C) A sensory organ
- D) A reproductive structure
Answer: A) A type of armor
- What is the primary mode of reproduction in Nanaloricida?
- A) Sexual reproduction
- B) Asexual reproduction
- C) Budding
- D) Binary fission
Answer: A) Sexual reproduction
- What is the approximate size range of Nanaloricida organisms?
- A) 1 mm to 3 mm
- B) 100 mm to 500 mm
- C) 100 µm to 500 µm
- D) 5 cm to 10 cm
Answer: C) 100 µm to 500 µm
- Nanaloricida have what type of digestive system?
- A) Complete
- B) Incomplete
- C) Absent
- D) Photosynthetic
Answer: A) Complete
- Nanaloricida are known for being one of the few animals capable of surviving in what kind of environment?
- A) Oxygen-depleted environments
- B) High-altitude regions
- C) Volcanic vents
- D) Arctic ice sheets
Answer: A) Oxygen-depleted environments
- The body of Nanaloricida is divided into how many main regions?
- A) 3
- B) 5
- C) 2
- D) 1
Answer: A) 3
- What is the outer layer of Nanaloricida called?
- A) Cuticle
- B) Exoskeleton
- C) Lorica
- D) Scales
Answer: C) Lorica
- Which structure helps Nanaloricida anchor themselves in the sediment?
- A) Head spines
- B) Lorica
- C) Feet
- D) Proboscis
Answer: A) Head spines
- Which class of organisms do Nanaloricida feed on?
- A) Bacteria
- B) Fungi
- C) Other Loricifera
- D) Algae
Answer: A) Bacteria
- Nanaloricida are considered to be what type of feeders?
- A) Filter feeders
- B) Deposit feeders
- C) Parasites
- D) Herbivores
Answer: B) Deposit feeders
- How do Nanaloricida obtain oxygen in anoxic environments?
- A) Via anaerobic metabolism
- B) Through specialized gills
- C) By diffusion through their skin
- D) By capturing air bubbles
Answer: A) Via anaerobic metabolism
- Nanaloricida exhibit what kind of larval stage?
- A) Swimming larva
- B) Parasitic larva
- C) Sessile larva
- D) Planula larva
Answer: A) Swimming larva
- Nanaloricida are part of which superphylum?
- A) Lophotrochozoa
- B) Ecdysozoa
- C) Deuterostomia
- D) Protostomia
Answer: B) Ecdysozoa
- Which of the following is absent in Nanaloricida?
- A) Excretory system
- B) Nervous system
- C) Reproductive system
- D) Digestive system
Answer: A) Excretory system
- Nanaloricida are classified as:
- A) Parasitic
- B) Free-living
- C) Sessile
- D) Predatory
Answer: B) Free-living
- What kind of nervous system do Nanaloricida have?
- A) Ladder-like nervous system
- B) Radial nervous system
- C) Brain and spinal cord
- D) None
Answer: A) Ladder-like nervous system
- What do Nanaloricida use for sensing their environment?
- A) Eyes
- B) Tentacles
- C) Sensory bristles
- D) Antennae
Answer: C) Sensory bristles
- Nanaloricida exhibit direct or indirect development?
- A) Direct
- B) Indirect with larval stages
- C) Both depending on species
- D) No development
Answer: B) Indirect with larval stages
- How do Nanaloricida move through sediments?
- A) Swimming
- B) Ciliary movement
- C) Crawling with head spines
- D) Flagellar propulsion
Answer: C) Crawling with head spines
- What is the significance of the lorica in Nanaloricida?
- A) It aids in locomotion
- B) It provides protection
- C) It helps in feeding
- D) It serves as a reproductive organ
Answer: B) It provides protection
- Which of the following is true about Nanaloricida’s digestive tract?
- A) It is incomplete
- B) It has separate mouth and anus
- C) It is absent
- D) It is a single opening for both ingestion and excretion
Answer: B) It has separate mouth and anus
- What kind of metabolic process do Nanaloricida exhibit in extreme environments?
- A) Aerobic respiration
- B) Anaerobic metabolism
- C) Photosynthesis
- D) Chemosynthesis
Answer: B) Anaerobic metabolism
- Nanaloricida are members of which kingdom?
- A) Plantae
- B) Fungi
- C) Animalia
- D) Protista
Answer: C) Animalia
- Nanaloricida are primarily found at which ocean depths?
- A) Intertidal zones
- B) Deep-sea habitats
- C) Coral reefs
- D) Riverbeds
Answer: B) Deep-sea habitats
- Nanaloricida contribute to the ecosystem by:
- A) Pollinating plants
- B) Breaking down organic matter
- C) Fixing nitrogen
- D) Consuming detritus
Answer: D) Consuming detritus