BSc Sem I 2017 2018 2018 CBZ Botany 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: 10 marks
   • a. The light reaction of photosynthesis takes place in
   • i) Grana of chloroplast
   • ii) | Stroma of chloroplast
   • iii) Membrane of mitochondria iv)
   • b. Middle Lamella of plant cell wall is mainly composed of
   • i) Cellulose
   • ii) Pectin
   • iii) | Hemicellulose
   • iv) Lignin
   • c. Pectin a polysaccharide constituting the middle lamella of plant cell wall is generally present in the
   • i) Zinc pectate
   • d. The term ecosystem was coined by
   • ii) Odum
   • iii) Tansley
   • iv) Haeckel
   • e. is the largest ecosystem
   • i) Forest
   • ii) Grassland
   • iv) Desert
   • f. Plants represent in the ecosystem
   • i) Primary consumers The correct genotype for a given character can be
   • i) Pp
   • ii) Ty
   • iii) CD
   • h. epistatis, the Mendel’s dihybrid ratio of 9:3:3:1 is changed to
   • ii) 9:7
   • Q.P. Code : 12034
   • i. The type of inheritance pattern where neither gene dominates completely over the other and partially expresses itself is called
   • i) Dominant inheritance
   • iii) | Codominance
   • iv) None of the above
   • j. When F; is crossed with pure recessive parent, it is called as
   • i) | Backcross iii)
3. Q1 B) Answer the following in one sentence: 10 marks
   • a) structural proteins?
   • b) Give any two functions of chloroplast
   • c) Define Producers in a food chain
   • d) What do you mean by trophic level?
   • e) What is heterozygote?
4. Q2 Answer any two from the following: 20 marks
   • a) Describe the ultrastructure and functions of Endoplasmic reticulum
   • b) Describe the Fluid Mosaic Model to explain the ultrastructure of plasma membrane
   • c) Explain the structure of plant cell in detail
   • d) Describe the ultrastructure of cell wall. Adda note on its functions
5. Q3 Answer any two from the following: 20 marks
   • a) Define Ecosystem. Give an account of forest ecosystem
   • b) Discuss the laws of thermodynamics inan ecosystem
   • c) Whatis a food chain? Explain different types of food chains
   • d) Describe in brief biotic and abiotic components of ecosystem
6. Q4 Answer any two from the following: 20 marks
   • a) Whatis Epistasis? Explain duplicate dominant Epistasis citing suitable example
   • b) With suitable examples, explain complete and incomplete dominance
   • c) Explain dihybrid ratio with suitable example
   • d) In sweet pea there are two independent genes C and P when present alone in dominant or recessive condition produce white coloured flowers but when these two dominant forms come together in homozygous or heterozygous condition purple flowers are produced. What will be the phenotype and genotype of the parents and progeny of the following crosses, also give the
7. Q5 Write short notes on: (Any Four) 20 marks
   • a) Functions of chloroplast
   • b) Plasmodesmata and its functions Pyramid of Biomass
   • e) ratio
   • f) Multiple alleles with an example

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