Minor phyla – Ctenophora, Rotifera, Chaetognatha, Onychophora, Siphunculida, Entoprocta, Ectoprocta, Phoronida - One Line Questions

1. The grasping spines used by Chaetognaths for capturing prey are located around the: — Mouth
2. The anterior end of a Siphunculid, bearing the mouth and the retractable proboscis, is called the: — Tentacular crown
3. Onychophorans are often called: — Velvet worms
4. The body plan of Ctenophora exhibits: —
5. The 'arrow worm' body plan is adapted for: — Planktonic predation
6. Entoprocts reproduce both sexually and asexually. Asexual reproduction typically occurs via: — Budding
7. Which phylum contains terrestrial, soft-bodied, centipede-like animals with unjointed legs and a segmented body covered by a cuticle? — Onychophora
8. The circulatory system in Onychophora is: — Open, with a dorsal heart and sinuses
9. Rotifers are commonly referred to as: — Wheel animals
10. Which of the following is NOT a characteristic feature of Ctenophora? — Nematocysts for stinging
11. The body of Phoronids is divided into two regions: a shorter anterior section bearing the lophophore and a longer posterior section that: — Secretes the tube
12. The feeding structure in Ectoprocta, a horseshoe-shaped or circular arrangement of ciliated tentacles, is called the: — Lophophore
13. Which phylum exhibits a nervous system with a distinct cerebral ganglion and a ladder-like arrangement of nerves in the body wall? — Onychophora
14. The presence of metanephridia for excretion is characteristic of which of the following minor phyla? — Siphunculida
15. Which phylum is characterized by a complete digestive system and a hydrostatic skeleton, enabling burrowing in soft substrates? — Siphunculida
16. Which phylum lacks a true coelom and exhibits a simple body plan with a U-shaped digestive tract? — Entoprocta
17. Which phylum is characterized by a corona, a ciliated structure used for both locomotion and feeding? — Rotifera
18. Chaetognaths are important components of marine ecosystems primarily as: — Secondary consumers
19. The 'corona' in Rotifera serves the dual purpose of: — Feeding and locomotion
20. Ectoprocts are members of which larger superphylum, characterized by the presence of a lophophore? — Lophotrochozoa
21. Which phylum contains sessile, worm-like marine animals that live in chitinous tubes and possess a U-shaped lophophore for feeding? — Phoronida
22. Which phylum consists of sessile, colonial, aquatic invertebrates that typically form encrusting or branching colonies and are often called 'moss animals'? — Ectoprocta
23. Phoronids possess a unique blood-vascular system with a dorsal and ventral blood vessel and a: — Heart
24. Phoronids are commonly known as: — Horseshoe worms
25. A distinguishing feature of Ectoprocta is that the anus is located: — Outside the lophophore
26. The larval stage of some Rotifers, known as the amictic egg, develops into: — Females capable of parthenogenesis
27. The segmented body and unjointed appendages of Onychophora suggest a possible evolutionary link between: — Annelida and Arthropoda
28. Entoprocts are sometimes called: — Moss animals
29. A key difference between Entoprocta and Ectoprocta lies in the position of the anus relative to the: — Lophophore
30. Which phylum comprises marine, unsegmented worms with a retractable, muscular proboscis used for burrowing and feeding? — Siphunculida
31. In Entoprocta, the anus is located: — Inside the circlet of tentacles
32. Siphunculids are typically: — Benthic burrowers
33. The symbiotic relationship between Phoronids and certain algae within their tubes is an example of: — Commensalism
34. The characteristic feeding apparatus in Rotifera used to sweep food particles into the mouth is called the: — Mastax
35. The body cavity of Phoronids is a: — Coelom
36. The mastax in Rotifera is homologous to which structure in other invertebrates? — Radula
37. What unique feature do Ctenophores possess for capturing prey, typically consisting of colloblasts or tentacles? — Colloblasts
38. A distinctive feature of Onychophora is the presence of slime glands that secrete a sticky substance for: — Defense and prey capture
39. Which phylum is characterized by the presence of comb plates (ctenes) for locomotion and biradial symmetry? — Ctenophora
40. Which phylum consists of small, planktonic marine predators with a distinctive arrow-like shape and a grasping apparatus? — Chaetognatha
41. The nervous system of Chaetognaths is considered relatively simple, consisting of a cerebral ganglion and a ventral nerve cord with: — Segmental ganglia
42. Which phylum is considered a 'living fossil' due to its ancient lineage and unique morphological features, bridging annelids and arthropods? — Onychophora
43. Which phylum consists of small, sessile, colonial or solitary marine animals with a characteristic calyx (cup-shaped body) and a retractile stalk? — Entoprocta
44. The proboscis of Siphunculida is used for: — Ingesting food and burrowing
45. Many species of Rotifera exhibit parthenogenesis. What does this mean? — Females produce offspring from unfertilized eggs.
46. Chaetognaths are commonly known as: — Arrow worms
47. Siphunculids are commonly known as: — Peanut worms
48. Ectoprocts are also commonly known as: — Moss animals
49. Members of the phylum Ctenophora are commonly known as: — Comb jellies
50. In Ectoprocta, the individual units forming the colony are called: — Zooids
All One Line Questions
E-Book Minor phyla – Ctenophora, Rotifera, Chaetognatha, Onychophora, Siphunculida, Entoprocta, Ectoprocta, Phoronida Online Test Minor phyla – Ctenophora, Rotifera, Chaetognatha, Onychophora, Siphunculida, Entoprocta, Ectoprocta, Phoronida Question Bank Minor phyla – Ctenophora, Rotifera, Chaetognatha, Onychophora, Siphunculida, Entoprocta, Ectoprocta, Phoronida