### **Part-B: Descriptive Type Questions**
#### **Section II (Answer any 5, 2 marks each)**
51. Discuss the floral biology of castor.
52. Explain the ploidy level and chromosomes of mulberry.
53. What is the significance of meiosis? Explain.
54. Discuss the contribution of M.J. Schleiden and T. Schwann to the field of Cytology.
55. Give an account of polyembryony.
56. What is karyotype? Mention its uses.
57. Distinguish between Paracentric and Pericentric inversions.
#### **Section III (Answer any 3, 5 marks each)**
58. Describe the inflorescence, flower, fruit, and seed of mulberry with neat labelled diagrams.
59. Discuss the distribution and economic importance of various food plants of tasar.
60. Explain microsporogenesis, pollination, and fertilization in mulberry.
61. Give a detailed account of the structure and classification of chromosomes.
62. What are aneuploids? Explain their origin and application in crop improvement.
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