Q1. Which of the following is a characteristic feature of all members of the phylum Porifera?
Q2. In Cnidarians, the term ‘polyp’ refers to a form that is:
Q3. Which of the following animals displays bilateral symmetry?
Q4. The body cavity that is lined by mesoderm on both sides (between body wall and gut) is called:
Q5. Which phylum is characterized by the presence of a notochord at least during some stage of development?
Q6. The presence of jointed appendages and a chitinous exoskeleton is the key feature of which phylum?
Q7. Which class of vertebrates has a three-chambered heart (two atria, one ventricle) and moist, scaleless skin?
Q8. In which phylum do animals possess a water vascular system that helps in locomotion and food capture?
Q9. Which of the following is a correct match of an animal with its body symmetry and germ layer organization?
Q10. The larval stage that is common to many mollusks (e.g., in Pila) is called:
Q11. Which of the following animals is NOT a member of the phylum Annelida?
Q12. The presence of a muscular foot, a visceral hump, and a mantle is characteristic of:
Q13. Which class of fish has a cartilaginous skeleton, exposed gill slits (no operculum), and a heterocercal tail?
Q14. Which of the following is a distinguishing feature of the phylum Ctenophora (comb jellies)?
Q15. In which animal would you find a closed circulatory system?
Q16. The scientific name of the dog is Canis familiaris. In this name, ‘familiaris’ refers to the:
Q17. Which of the following is a flightless bird that belongs to class Aves but has a flat sternum without a keel?
Q18. The phenomenon where the body wall of cnidarians contains both ectoderm and endoderm with a non-cellular mesoglea in between is called:
Q19. Which of the following is an exclusively marine phylum with spiny skin and tube feet?
Q20. In the life cycle of a frog (Amphibia), the larval stage is called a tadpole. Which of the following is true about the tadpole?