This quiz works best with JavaScript enabled. Home > Science > Biology > Zoology – Quiz 84 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Zoology Quiz 84 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Primitive molluscs will only complete a larval stage known as a ..... while more advanced molluscs will complete a second larval stage called the ..... A) Trochophore, veliger. B) Veliger, spat. C) Veliger, trocophore. D) Veliger, glochidia. Show Answer Correct Answer: A) Trochophore, veliger. 2. As adults, amphibians breathe through ..... A) Gills and skin. B) Lungs and gills. C) Lungs and skin. D) Feet. Show Answer Correct Answer: C) Lungs and skin. 3. The respiratory process is regulated by respiratory rhythm center present in the brain which is? A) Stimulated by lower O2 and H+ concentration in aortic arch. B) Inhabited by higher O2 and H+ concentration. C) Stimulated by highest CO2 and higher H+ concentration. D) Stimulated by lower O2 and H+ concentration in carotid artery. Show Answer Correct Answer: C) Stimulated by highest CO2 and higher H+ concentration. 4. Turtles, lizards, snakes and crocodiles are all examples of what class? A) Amphibians. B) Reptiles. C) Birds. D) Mammals. Show Answer Correct Answer: B) Reptiles. 5. Rana hexadactyla belongs to A) Amphibia. B) Reptile. C) Aves. D) Mammals. Show Answer Correct Answer: A) Amphibia. 6. Which class of Mollusks include clams, oysters, and mussels? A) Gastropods. B) Bivalves. C) Cephalopods. D) None of above. Show Answer Correct Answer: B) Bivalves. 7. The taxon with the largest amount of organisms grouped together ..... A) Species. B) Phylum. C) Kingdom. D) Domain. Show Answer Correct Answer: D) Domain. 8. What percentage of organisms that have ever lived are extinct? A) Less than 1%. B) More than 99%. C) 50%. D) 80%. Show Answer Correct Answer: B) More than 99%. 9. DNA replication takes place at ..... phase of the cell cycle. A) G1. B) S. C) G2. D) M. Show Answer Correct Answer: B) S. 10. Oxygen rich blood flows from the lungs into what chamber? A) Left Atrium. B) Left Ventricle. C) Right Atrium. D) Right Ventricle. Show Answer Correct Answer: A) Left Atrium. 11. A sea star can eat a bivalve by ..... A) Prying open the shell and pulling it out using its tube feet. B) Swallowing the entire shell with the bivalve inside. C) Digesting the bivalve by pushing its stomach into its shell. D) Using its arms to smash the shell on a rock before eating the bivalve inside. Show Answer Correct Answer: C) Digesting the bivalve by pushing its stomach into its shell. 12. How do paramecium move? A) Cilia. B) Flagella. C) Pseudopods. D) None of above. Show Answer Correct Answer: A) Cilia. 13. The skeleton of a vertebrate A) Polythermic. B) Endoskeleton. C) Homeotherm. D) Vertebral column. Show Answer Correct Answer: B) Endoskeleton. 14. What is the National Bird of India A) Eagle. B) Vulture. C) Peacock. D) Parrot. Show Answer Correct Answer: C) Peacock. 15. What percentage of species become extinct at some point? A) 1%. B) 20%. C) 99%. D) 50%. Show Answer Correct Answer: C) 99%. 16. Dragonfly A) Useful. B) Harmful. Show Answer Correct Answer: A) Useful. 17. Hind or tail end of an organism A) Anterior. B) Posterior. C) Dorsal. D) Ventral. Show Answer Correct Answer: B) Posterior. 18. The idea that evolutionary change occurs at a slow, constant pace over millions of years is A) Phyletic gradualism. B) Punctuated equilibrium. C) Stabilizing selection. D) Parapatric speciation. Show Answer Correct Answer: A) Phyletic gradualism. 19. Which is not an aquatic animal? A) Hydra. B) Jellyfish. C) Corals. D) Filaria. Show Answer Correct Answer: D) Filaria. 20. What is the science of genes, heredity, and the variation of organisms? A) Marine Biology. B) Comparative anatomy. C) Ecology. D) Genetics. Show Answer Correct Answer: D) Genetics. ← PreviousNext →Related QuizzesScience QuizzesZoology Quiz 1Zoology Quiz 2Zoology Quiz 3Zoology Quiz 4Zoology Quiz 5Zoology Quiz 6Zoology Quiz 7Zoology Quiz 8Zoology Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books