1. The name Animalia is derived from the Latin word "anima" meaning:
Answer: B. breath or soul
Biology Class 11 Unit 10: Animalia MCQs
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2. Animals are:
Answer: B. eukaryotic, multicellular, ingestive heterotrophs lacking cell walls
3. Which is NOT a criterion of animal classification?
Answer: D. Type of nutrition of the cell wall
4. The two sub-kingdoms based on organization of tissues are:
Answer: B. Parazoa and Eumetazoa
5. Parazoa includes animals that:
Answer: C. lack tissue organization (sponges)
6. Diploblastic animals have:
Answer: B. two germ layers: ectoderm and endoderm
7. The jelly-like layer between the two germ layers of diploblastic animals is the:
Answer: B. mesoglea
8. Triploblastic animals have:
Answer: B. ectoderm, mesoderm and endoderm
9. A diploblastic phylum is:
Answer: C. Cnidaria
10. Radial symmetry is considered an adaptation to:
Answer: B. a sessile life
11. Bilateral symmetry is considered an adaptation to:
Answer: B. motility
12. All animals of grade Bilateria are:
Answer: B. triploblastic
13. Echinoderm larvae show ... while the adults show ...:
Answer: B. bilateral; radial
14. Animals with no body cavity are:
Answer: C. acoelomate
15. A pseudocoelom is a body cavity formed between:
Answer: B. mesoderm and endoderm
16. A true coelom is completely lined by:
Answer: C. mesoderm
17. Platyhelminthes are:
Answer: C. acoelomate
18. Nematodes are:
Answer: B. pseudocoelomate
19. In protostomes the blastopore develops into the:
Answer: B. mouth
20. In deuterostomes the blastopore develops into the:
Answer: B. anus
21. Deuterostomes include:
Answer: C. echinoderms and chordates
22. Invertebrates account for about what percent of known animal species?
Answer: C. 95
23. The number of major invertebrate phyla described is:
Answer: D. eight
24. Sponges belong to phylum:
Answer: B. Porifera
25. Porifera means:
Answer: B. pore bearer
26. The outer dermal layer of a sponge is the:
Answer: B. pinacoderm (pinacocytes)
27. The inner layer of sponge made of flagellated collar cells is the:
Answer: B. choanoderm (choanocytes)
28. The middle layer of sponges, with amoeboid cells, is the:
Answer: C. mesenchyme
29. The pores in the body of a sponge are called:
Answer: B. ostia
30. The large opening through which water leaves the sponge is the:
Answer: B. osculum
31. The central cavity in the sponge is the:
Answer: C. spongocoel
32. The skeleton of a sponge consists of:
Answer: C. spicules (calcareous or siliceous) or spongin fibres
33. Asexual reproduction in sponges is by:
Answer: B. budding and gemmules
34. Sponges are believed to have evolved from:
Answer: B. choanoflagellates
35. Spongilla and Sycon are:
Answer: B. sponges
36. Dried sponges are used for:
Answer: B. bathing, washing and absorbing fluids in surgery
37. Cnidaria means:
Answer: B. stinging celled
38. The stinging cells of cnidarians are called:
Answer: B. cnidocytes with nematocysts
39. Cnidarians are:
Answer: B. diploblastic with a gastrovascular cavity having one opening
40. The nervous system of cnidarians is in the form of a:
Answer: C. nerve net
41. Cnidarians exhibit:
Answer: B. radial or biradial symmetry
42. Which is a freshwater cnidarian?
Answer: C. Hydra
43. A colonial cnidarian is:
Answer: B. Obelia
44. The feeding zooids of cnidarian colonies are the:
Answer: B. polyps
45. The reproductive zooids are the:
Answer: B. medusae
46. Division of labour among zooids of a colony is called:
Answer: B. polymorphism
47. Coral reefs are built of:
Answer: B. calcium carbonate
48. Obelia colony has three types of zooids, which are:
Answer: B. hydranth, blastostyle and medusae
49. Planaria belongs to:
Answer: B. Platyhelminthes
50. Flatworms are:
Answer: A. dorsiventrally flattened, triploblastic, bilaterally symmetrical and acoelomate
About Biology Class 11 Unit 10 MCQs (Federal Board)
These 216 Biology MCQs cover Class 11 Unit 10: Animalia of the Federal Board (FBISE) HSSC-I (1st Year / Class 11) syllabus. They are SLO-based MCQs as per the new pattern for FBISE exams. Each question has four options and the correct answer is shown, so you can practise for the annual examination and find the topics you still need to revise. The questions are split over 5 pages of 50. Use the Print button to save this chapter as a PDF.