Trepostomatida MCQs January 8, 2026September 28, 2024 by u930973931_answers 30 min Score: 0 Attempted: 0/30 Subscribe 1. Trepostomatida belongs to which phylum? (A) Mollusca (B) Bryozoa (C) Cnidaria (D) Arthropoda 2. Which type of environment do Trepostomatida primarily inhabit? (A) Freshwater (B) Terrestrial (C) Marine (D) Brackish 3. The calcareous exoskeleton of Trepostomatida is known as a: (A) Polyp (B) Lophophore (C) Zooecium (D) Coral 4. Trepostomatida are primarily characterized by which of the following features? (A) Segmented bodies (B) Colonial lifestyle (C) Complex eyes (D) Ability to fly 5. Which of the following best describes the feeding mechanism of Trepostomatida? (A) Filter feeding (B) Predatory (C) Parasitic (D) Herbivorous 6. Trepostomatida reproduce mainly through: (A) Asexual reproduction (B) Fission (C) Budding (D) Sexual reproduction 7. The members of Trepostomatida typically form colonies that can: (A) Float freely (B) Attach to substrates (C) Swim actively (D) Live in symbiosis with fish 8. Which of the following structures do Trepostomatida use for respiration? (A) Gills (B) Skin (C) Cloaca (D) Lophophore 9. What type of symmetry is exhibited by Trepostomatida? (A) Radial symmetry (B) Bilateral symmetry (C) Asymmetrical (D) Trilateral symmetry 10. The term “zooid” in Trepostomatida refers to: (A) A larval stage (B) A reproductive structure (C) An individual in a colony (D) A feeding apparatus 11. Trepostomatida were particularly abundant during which geological period? (A) Cretaceous (B) Jurassic (C) Paleozoic (D) Ordovician 12. The skeleton of Trepostomatida is primarily made of: (A) Protein (B) Silica (C) Chitin (D) Calcium carbonate 13. Which of the following statements about Trepostomatida is FALSE? (A) They have a colonial structure (B) They can photosynthesize (C) They primarily filter feed (D) They have a hard skeleton 14. The characteristic structure of Trepostomatida that aids in feeding is called: (A) Zooecium (B) Radula (C) Tentacle (D) Lophophore 15. Trepostomatida colonies are often found in which of the following formations? (A) Coral reefs (B) Rock outcrops (C) Sandy seabeds (D) Open ocean 16. What is the primary ecological role of Trepostomatida? (A) Primary producers (B) Decomposers (C) Habitat creators (D) Parasites 17. The feeding mechanism in Trepostomatida is primarily: (A) Active predation (B) Grazing (C) Filter feeding (D) Absorption 18. Which structure in Trepostomatida is involved in both feeding and respiration? (A) Lophophore (B) Tentacles (C) Zooecium (D) Statoblast 19. The reproductive strategy of Trepostomatida often involves the production of: (A) Larvae (B) Gemmules (C) Statoblasts (D) Spores 20. Trepostomatida can be distinguished from other bryozoans by their: (A) Coloration (B) Soft bodies (C) Calcareous zooecia (D) Solitary lifestyle 21. In Trepostomatida, the term “colonial” refers to: (A) Individuals living separately (B) Solitary organisms (C) Groups of genetically identical individuals (D) Temporary aggregations 22. Which of the following is a key characteristic of Trepostomatida? (A) They are always free-living (B) They lack any skeletal structure (C) They have a complex nervous system (D) They are mostly colonial 23. The reproductive structures of Trepostomatida that are involved in sexual reproduction are called: (A) Buds (B) Gonophores (C) Zooids (D) Statoblasts 24. The primary method of asexual reproduction in Trepostomatida is: (A) Budding (B) Fragmentation (C) Fission (D) Parthenogenesis 25. Which of the following habitats would NOT typically support Trepostomatida? (A) Rocky shorelines (B) Coral reefs (C) Desert (D) Open ocean 26. The distinct structure that houses individual zooids in Trepostomatida is called a: (A) Polyp (B) Zooecium (C) Statoblast (D) Lophophore 27. Which of the following does NOT contribute to the success of Trepostomatida in marine ecosystems? (A) Parasitic behavior (B) Formation of colonies (C) Ability to filter feed (D) Calcareous skeleton 28. The lophophore of Trepostomatida is primarily used for: (A) Defense (B) Movement (C) Excretion (D) Feeding 29. Trepostomatida contribute to the marine environment by: (A) Competing with fish for food (B) Decomposing organic matter (C) Consuming large amounts of plankton (D) Enhancing biodiversity 30. The ecological impact of Trepostomatida can be best described as: (A) Negative, due to competition (B) Detrimental, causing pollution (C) Neutral, having no significant effect (D) Beneficial, providing habitat