BSc Botany Sem I 2018 19 Dec 2018-19 BOTANY PAPER II Question Paper - Mumbai University | munotes

Questions asked in this paper

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• ii) Figures to the right indicate full marks

1. Q1 B Answer the following in one sentence 10 marks
   • a. What is plasmodesmata?
   • b. Define net primary productivity
   • c. What is eutrophication?
   • d. What is genotype? What are multiple alleles?
2. Q2 Answer any two of the following. 20 marks
   • a. Explain in detail the chemical composition of plasma membrane
   • b. Describe Bi-Lipid layered model of plasma membrane to explain its ultra structure. Add a note on its functions
   • c. Describe the ultra-structure and functions of Chloroplast
   • d. Distinguish between prokaryotic and eukaryotic cell
3. Q3 Answer any two of following. 20 marks
   • a. Explain Y shaped energy flow model
   • b. Discuss Laws of thermodynamics in an ecosystem
   • c. What do you mean by ecosystem? Describe an aquatic ecosystem
   • d. Define food chain? Explain different types of food chains Answer any two of following. 20
   • a. Define monohybrid ratio. Explain incomplete dominance and co-dominance
   • b. Explain gene interaction with reference to comb pattern in fowl
   • c. What is epistasis? Explain recessive epistasis giving a suitable example
   • d. In sweet pea there are two independent genes C and P when present alone in dominant or recessive condition produces white coloured flowers but when these two dominant genes come together in homozygous or heterozygous condition purple coloured flowers are produced What will be the phenotype and genotype ratio of the progeny in the following crosses. Also give the phenotype of parents Write short notes on any four 20
   • a. Functions of plasma membrane
   • b. Components of endoplasmic reticulum
   • c. Biotic components of an ecosystem Law of dominance

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