QUESTIONS. 157 



37. Describe Paramoeciuni. 



38. Explain the terms CORTICAL LAYER, CONTRACTILE VESICLE, 



NUCLEUS, NUCLEOLUS. 



39. What various modes of reproduction have been observed in 



this class ? 



40. Describe VerticeUa, and give an account of the various modes 



of reproduction observed in tins group. 



41. Define the Rhizopoda. 



42. Give examples. 



43. What are PSEUDOPODIA ? 



44. What is the mode of reproduction in the Amoeba ? Give a 



description of this animal. 



45. What is the origin of the term Foraminlfera ? 



46. How do they differ from Amoeba ? 



47. Where are they usually found ? 



48. Describe the shells secreted by these animals. 



49. How do the Radiolaria differ from the Foraminlfera ? 



50. What are the Polyclstlnos ? 



51. Describe the Thalasslcolllda. 



52. Give an account of the Acanthometra. 



53. What is the structure of a sponge ? 



54. What is the nature of the frame-work or skeleton ? 



55. What are the INHALANT and EXHALANT apertures ? 



56. How is a sponge fed ? 



57. Describe the mode of reproduction in the fresh- water sponge. 



58. What are SPICULA ? What are GEMMULES ? 



59. AVhat are the Gregarinidce ? 



60. What is their usual habitat ? 



61. Wliat are PSEUDO-NAVICELL^E ? 



