Heterotardigrada MCQs January 8, 2026September 30, 2024 by u930973931_answers 30 min Score: 0 Attempted: 0/30 Subscribe 1. What is the primary habitat of Heterotardigrada? (A) Terrestrial (B) Arboreal (C) Semi-aquatic (D) Aquatic 2. Heterotardigrada are commonly known as what? (A) Water bears (B) Sea pigs (C) Marine worms (D) Tardigrades 3. Which feature is characteristic of Heterotardigrada? (A) Segmented body (B) Non-segmented body (C) Rigid exoskeleton (D) Presence of wings 4. What type of feeding strategy do Heterotardigrada primarily employ? (A) Suction feeding (B) Filter feeding (C) Deposit feeding (D) Herbivorous feeding 5. Which body part is primarily used for locomotion in Heterotardigrada? (A) Tentacles (B) Lobopods (C) Fins (D) Cilia 6. What is the reproductive strategy of Heterotardigrada? (A) Parthenogenesis (B) Asexual reproduction through fission (C) Budding (D) Sexual reproduction 7. Which of the following statements about Heterotardigrada is true? (A) They have a simple nervous system. (B) They have a complete digestive system. (C) They possess complex eyes. (D) They are exclusively freshwater organisms. 8. Heterotardigrada typically exhibit what type of body symmetry? (A) Radial symmetry (B) Pentaradial symmetry (C) Asymmetry (D) Bilateral symmetry 9. What is the primary ecological role of Heterotardigrada? (A) Primary producers (B) Decomposers (C) Predators (D) Parasites 10. What kind of digestive system do Heterotardigrada have? (A) Complete digestive system (B) Simple sac-like (C) Incomplete digestive system (D) No digestive system 11. Heterotardigrada are known for their ability to survive in what conditions? (A) Extreme heat (B) Extreme desiccation (C) Extreme pressure (D) Extreme acidity 12. Which of the following structures is primarily involved in respiration for Heterotardigrada? (A) Gills (B) Lungs (C) Body surface (D) Specialized breathing structures 13. What is the body cavity of Heterotardigrada called? (A) Coelom (B) Gastrovascular cavity (C) Pseudocoelom (D) Hemocoel 14. Which of the following is NOT a characteristic of Heterotardigrada? (A) Soft-bodied (B) Presence of lobopods (C) Lack of segmentation (D) Presence of a hard exoskeleton 15. What is the typical size range of Heterotardigrada species? (A) 0.1-0.5 mm (B) 1.5-3 mm (C) 0.5-1.5 mm (D) 3-5 mm 16. What is a defining feature of the Heterotardigrada? (A) Presence of a shell (B) Photosynthetic capabilities (C) Complex social behavior (D) Ability to enter a cryptobiotic state 17. Heterotardigrada are most commonly found in which environment? (A) Desert (B) Deep ocean floors (C) Moist mosses and lichens (D) Mountain ranges 18. Which of the following statements about Heterotardigrada is correct? (A) They have a complex circulatory system. (B) They are exclusively marine organisms. (C) They are capable of desiccation. (D) They exhibit complex reproductive strategies. 19. Which of the following structures helps Heterotardigrada in nutrient absorption? (A) Tentacles (B) Stylet (C) Gills (D) Mucus layer 20. What is the primary method of locomotion in Heterotardigrada? (A) Crawling using lobopods (B) Jet propulsion (C) Swimming (D) Gliding 21. How do Heterotardigrada typically respond to adverse environmental conditions? (A) Entering a cryptobiotic state (B) Hibernation (C) Migration (D) Reproduction 22. Which structure is used by Heterotardigrada for excretion? (A) Nephridia (B) Body surface (C) Coelomoducts (D) Malpighian tubules 23. What type of environment do Heterotardigrada prefer? (A) Dry and arid (B) High salinity (C) Moist and humid (D) Cold and icy 24. Heterotardigrada belong to which larger group of animals? (A) Ecdysozoa (B) Arthropoda (C) Mollusca (D) Deuterostomia 25. Which of the following is a method of locomotion in Heterotardigrada? (A) Jet propulsion (B) Crawling (C) Gliding (D) Floating 26. What is the primary food source for Heterotardigrada? (A) Detritus (B) Plants (C) Other animals (D) Microorganisms 27. Which of the following describes the reproduction of Heterotardigrada? (A) External fertilization (B) Internal fertilization (C) Budding (D) Asexual reproduction 28. Which of the following organisms are considered relatives of Heterotardigrada? (A) Onychophorans (B) Annelids (C) Mollusks (D) Echinoderms 29. What type of symmetry do Heterotardigrada exhibit? (A) Radial symmetry (B) Bilateral symmetry (C) Asymmetry (D) Pentaradial symmetry 30. Which of the following is a common predator of Heterotardigrada? (A) Small fish (B) Birds (C) Larger invertebrates (D) Amphibians