BSc Botany Sem III 2018 2019 Oct 2019 BOTANY BZ & CB BOTANY PAPER II Question Paper - Mumbai University | munotes

Questions asked in this paper

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• 2. Figures to the right indicate full marks

1. Q3 Draw neat and labelled diagrams wherever necessary
2. Q1 A) Choose the correct option from the following and REWRITE the sentence. 10 marks
3. Q1 DNA replication occurs in Phase li) deals with formation and decomposition of hydrogen peroxide Ribosomes attached to the m-RNA in string are called
   • iv) Glyoxysomes are organelles involved in conversion of
   • a) amino acids to proteins
   • b) amino acids to carbohydrates
   • c) Fatty acids to carbohydrates
   • d) fatty acids to lipids
   • v) Prader Willi syndrome is observed in human beings due to deletion of a segment in the
   • b) 5th
   • vi) Barr body in the female mammalian somatic cells is an inactivated
   • a) Y- Chromosome
   • d) Chromosome
   • vii) The sum total of cytoplasmic genetic material is called
   • a) Cyton
   • d) Recon
   • viii) In mode of DNA replication, one of the daughter molecules has both parental strands and the other contains both newly synthesized strands
   • a) Conservative
   • b) Semi-conservative
   • c) Disruptive
   • d) Continuous
   • ix) The function of enzyme is to synthesize mRNA primer
   • a) Nuclease
   • x) The nucleotides taking part in DNA replication are 2
   • B) Answer the following in one or two sentences: 10
4. Q1 State two functions of mitochondria Name the two types of translocations
   • iii) What is sex linked inheritance?
   • iv) What do you mean by semi-conservative mode of DNA replication?
5. Q2 Answer any two of the following: 20 marks
6. Q1 Explain the ultra-structure of mitochondrion in detail
   • ii) Describe briefly the structure of DNA. note on its function
   • iii) Define Mitosis. Explain the various stages of mitosis
   • iv) Describe the structure of t-RNA and the functions of its different arms
7. Q3 Answer any two of the following: 20 marks
8. Q1 What are chromosomal aberrations? Discuss inversions with reference to their origin, and
   • ii) Explain genic balance theory of sex determination in Drosophila
   • iii) What is Haemophilia? Explain inheritance of Haemophilia in man
   • iv) What is cytoplasmic inheritance? Explain Male sterility in Maize
9. Q4 Answer any two of the following: 20 marks
10. Q1 Describe briefly the molecular mechanism of DNA replication in prokaryotes
    • ii) Explain briefly Meselson and Stahl’s experiment of DNA replication
    • ii) Explain the process of transcription in prokaryotes
    • iv) Describe the steps involved in RNA processing in eukaryotes
11. Q5 Write short notes. (Any Four) 20 marks
    • i) Metaphase I of Meiosis
    • ii) A- DNA
    • iv) Sex determination in Melandrium
    • v) Plastid transmission in Mirabilis jalapa

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