Dicyemidae MCQs December 3, 2025September 30, 2024 by u930973931_answers 23 min Score: 0 Attempted: 0/23 Subscribe 1. What are Dicyemidae primarily known for? (A) Being parasitic in marine animals (B) Living in freshwater environments (C) Being free-living organisms (D) Exhibiting complex life cycles 2. Dicyemidae are commonly found in the body cavities of which type of animals? (A) Fish (B) Insects (C) Mammals (D) Cephalopods 3. Which of the following best describes the body structure of Dicyemidae? (A) Multicellular and complex (B) Simplistic and small (C) Highly segmented (D) Gelatinous and large 4. What is the primary feeding strategy of Dicyemidae? (A) Absorbing nutrients from the host (B) Photosynthesis (C) Filter feeding (D) Predation 5. Dicyemidae have a unique developmental stage known as which of the following? (A) Rhombogen (B) Metamorphosis (C) Zygote (D) Planktonic larvae 6. Which of the following is a characteristic feature of Dicyemidae? (A) Acoelomate body plan (B) Complex nervous system (C) Exoskeleton (D) Chitinous cuticle 7. The phylum to which Dicyemidae belong is? (A) Annelida (B) Platyhelminthes (C) Cnidaria (D) Rhombozoa 8. What type of reproduction do Dicyemidae primarily exhibit? (A) Asexual reproduction only (B) Sexual reproduction only (C) Both sexual and asexual reproduction (D) Budding 9. How many cell layers do Dicyemidae typically possess? (A) Two (B) One (C) Four (D) Three 10. Dicyemidae are primarily found in which type of water? (A) Freshwater (B) Marine (C) Brackish (D) Polluted water 11. The adult form of Dicyemidae is often referred to as? (A) Dicyemid (B) Plasmodium (C) Sporocyst (D) Polyp 12. What is the main ecological role of Dicyemidae in their host organisms? (A) They contribute to waste removal (B) They assist in digestion (C) They can affect the host's health (D) They provide camouflage 13. Which structure is most commonly associated with Dicyemidae? (A) Gills (B) Tentacles (C) Renette cells (D) Nematocysts 14. Dicyemidae are primarily known to be what type of organism? (A) Parasitic (B) Symbiotic (C) Commensal (D) Free-living 15. The primary method of locomotion for Dicyemidae is? (A) Ciliary movement (B) Swimming (C) Passive movement with host (D) Gliding on surfaces 16. Dicyemidae are known to inhabit the renal sacs of their hosts. What is a renal sac? (A) A digestive cavity (B) An excretory organ (C) A reproductive organ (D) A feeding structure 17. What is a key characteristic of the life cycle of Dicyemidae? (A) Dependence on environmental cues for reproduction (B) Absence of larval stages (C) Direct development without metamorphosis (D) Presence of a complex alternation of generations 18. In terms of size, Dicyemidae are generally considered to be? (A) Large (B) Medium-sized (C) Microscopic (D) Gigantic 19. The body plan of Dicyemidae is primarily characterized by what feature? (A) A segmented body (B) A simple, tubular structure (C) An exoskeletal layer (D) A coelomic cavity 20. Which of the following statements about Dicyemidae is true? (A) They have complex organ systems. (B) They have a well-defined circulatory system. (C) They are dependent on their host for nutrients. (D) They reproduce exclusively through binary fission. 21. Which of the following is a common feature of Dicyemidae? (A) Presence of a nervous system (B) Well-defined body cavities (C) Absence of a digestive system (D) Presence of segmented bodies 22. Dicyemidae have been primarily classified based on which of the following criteria? (A) Morphological characteristics (B) Geographic distribution (C) Coloration and size (D) Behavioral patterns 23. What is the significance of studying Dicyemidae in marine biology? (A) They help in understanding coral reefs (B) They are indicators of pollution (C) They provide insight into host-parasite relationships (D) They are used in aquaculture