PG TRB ZOOLOGY ONLINE TEST / QUIZ AS PER LATEST SYLLABUS | Unit I - ANIMAL DIVERSITY AND PHYLOGENY | Structure, affinities and life history of Minor Phyla – Ectoprocta.

PG TRB ZOOLOGY ONLINE TEST / QUIZ AS PER LATEST SYLLABUS | Unit I - ANIMAL DIVERSITY AND PHYLOGENY | Structure, affinities and life history of Minor Phyla – Ectoprocta.

1. The body of an ectoproct is typically enclosed in a protective structure called:

• A. Coelom
• B. Cystid
• C. Lophophore
• D. Polypide

2. Ectoprocts are commonly known as:

• A. Moss animals
• B. Lamp shells
• C. Arrow worms
• D. Tongue worms

3. The ciliated feeding structure characteristic of Ectoprocta is the:

• A. Radula
• B. Corona
• C. Trochophore
• D. Lophophore

4. The main body part of an individual ectoproct, including the lophophore and gut, is called the:

• A. Polypide
• B. Funiculus
• C. Ancestrula
• D. Zooecium

5. The larva of freshwater ectoprocts (Phylactolaemata) is known as a:

• A. Cyphonautes larva
• B. Trochophore larva
• C. Actinotrocha larva
• D. Plumatella larva

6. Ectoprocts are primarily:

• A. Sessile and solitary
• B. Motile and colonial
• C. Sessile and colonial
• D. Motile and solitary

7. Which class of Ectoprocta contains both marine and freshwater species?

• A. Gymnolaemata
• B. Stenolaemata
• C. Phylactolaemata
• D. All of the above

8. The unique, asexual reproductive structure produced by freshwater ectoprocts is called a:

• A. Statoblast
• B. Gemmule
• C. Bud
• D. Sporocyst

9. The coelom of Ectoprocta is:

• A. Acoelomate
• B. Pseudocoelomate
• C. Eucoelomate
• D. Enterocoelomate

10. The anus in Ectoprocta is located:

• A. Within the lophophore
• B. Outside the lophophore
• C. At the base of the colony
• D. It is absent

11. The term "zooecium" refers to the:

• A. Entire colony
• B. Individual zooid
• C. Outer non-living body wall
• D. Protective structure of the polypide

12. Which of the following is NOT a typical zooid type in an ectoproct colony?

• A. Autozooid
• B. Kenozooid
• C. Gastrozooid
• D. Vibraculum

13. The process of degeneration and regeneration of the polypide is called:

• A. Budding
• B. Metamorphosis
• C. Cyphonization
• D. Cyclostomation

14. The term "bryozoa" is often used synonymously with:

• A. Phoronida
• B. Entoprocta
• C. Ectoprocta
• D. Rotifera

15. Ectoprocts have a U-shaped digestive tract, indicating their affinity with which phylum?

• A. Annelida
• B. Arthropoda
• C. Brachiopoda
• D. Cnidaria

16. The nervous system of Ectoprocta is characterized by:

• A. A complex brain
• B. A simple nerve net
• C. A single ganglion
• D. A ventral nerve cord

17. What is the primary function of the lophophore in Ectoprocta?

• A. Reproduction
• B. Locomotion
• C. Feeding
• D. Defense

18. The larval stage of a marine ectoproct is known as:

• A. Planula
• B. Cyphonautes
• C. Bipinnaria
• D. Nauplius

19. Ectoprocts belong to the superphylum:

• A. Deuterostomia
• B. Lophotrochozoa
• C. Ecdysozoa
• D. Porifera

20. The first zooid in a colony, which develops from a metamorphosed larva, is called the:

• A. Autozooid
• B. Gonozooid
• C. Ancestrula
• D. Ovicell

21. The exoskeleton of ectoprocts is secreted by the:

• A. Epidermis
• B. Lophophore
• C. Funiculus
• D. Polypide

22. What is the function of an avicularium in some ectoprocts?

• A. Brooding embryos
• B. Reproduction
• C. Defense and cleaning
• D. Sensory perception

23. The coelom in ectoprocts is lined by:

• A. Ectoderm
• B. Endoderm
• C. Mesoderm
• D. A peritoneum derived from mesoderm

24. Which of the following is a characteristic of the class Gymnolaemata?

• A. Lophophore is U-shaped
• B. Exclusively freshwater
• C. Lophophore is circular
• D. Coelom is not present

25. The affinities of Ectoprocta with which phylum are indicated by the presence of a lophophore and a U-shaped gut?

• A. Entoprocta
• B. Brachiopoda and Phoronida
• C. Mollusca
• D. Arthropoda

26. The term "ovicell" refers to a specialized structure for:

• A. Feeding
• B. Brooding embryos
• C. Defense
• D. Excretion

27. Ectoprocts reproduce sexually by:

• A. Budding
• B. Fragmentation
• C. Hermaphroditism with cross-fertilization
• D. Statoblasts

28. The formation of a new ectoproct colony from a single individual is called:

• A. Metamorphosis
• B. Polymorphism
• C. Budding
• D. Fission

29. The main difference between Ectoprocta and Entoprocta is the position of the:

• A. Lophophore
• B. Anus
• C. Mouth
• D. Tentacles

30. The body cavity in Ectoprocta is:

• A. Schizocoelom
• B. Pseudocoelom
• C. Acoelom
• D. Enterocoelom

Share: