BSc Botany Sem I 2023 2024 Dec 2024 & BOTANY II Question Paper - Mumbai University | munotes

Questions asked in this paper

• 3. Figures to the right indicate full marks

1. Q1 A. Choose the correct option & rewrite the statements 10 marks
   • 1. Fluid mosaic model is explained in
   • 2. In Bacteria, the cell wall is composed
   • 3. is a linear, unbranched polymer, consisting of straight polysaccharide chains made of glucose units 4, convert the dead and decaying complex organic materials into simple components in the ecosystem
   • 5. in the food chain, only _* percent Energy transfers during each successive trophic
   • 6. Select the producer organism amongst the following:
   • 7. Which one of the following is an Abiotic Factor?
   • 8. The checkerboard used to calculate the phenotype and genotype ratio of the crosses is
   • 9. The ratio of dominant
   • 10. Fhe cross between the F1 progeny and a dominant or a recessive parent is called
2. Q1 B Answer the following in one or two sentence/s each 10 marks
   • a. Mention the two types of Endoplasmic Reticulum
   • b. Define the First Law of Thermodynamics applicable to ecosystems
   • c. Give a function of Decomposers with its examples
   • d. What is epistatic gene and hypostatic gene?
   • e. Give the three laws of inheritance postulated by Sir Gregor Johann Mendel
3. Q2 Answer the following questions: (ANY TWO) 20 marks
   • a. With the help of a neat and labelled diagram, describe the structure of a typical eukaryotic
   • b. Describe the structure and composition of plant cell wall 22, BOTANY - Il SEMESTER | MARKS-100 DURATION - 3 HRS
   • c. Describe the structure of Chloroplast with help of neat and labelled diagram
   • d. Explain the structure of Endoplasmic reticulum with the help of a neat and labelled diagram and add a note on its function
4. Q3 Answer the following questions: (ANY TWO) 20 marks
   • a. Explain the Biotic factors of the ecosystem in detail
   • b. Describe the Upright energy flow model with a neat and labelled schematic diagram
   • c. Define the Ecological Pyramid and add a note on its types Discuss about Food Web and give its types
5. Q4 Answer the following questions: (ANY TWO) 20 marks
   • a. A true breeding homozygous tall plant was crossed with a true breeding homozygous dwarf plant. Tall is dominant over short. All the F1 progenies were
   • 1. Compute suitable cross to show the Fl progenies- phenotype and
   • 2. The Fl X were crossed to raise the F2 - compute a cross to find the phenotype and genotype ratio of the F2 generation
   • b. Which are the alleles involved in the ABO blood group system in Human population . Perform the following crosses to Identify the blood group of the
   • 1. Father is B (Heterozygous) and the Mother is A (Homozygous)
   • 2. Father is AB and the Mother is AB
   • 3. Father is A (heterozygous) and the Mother is O
   • c. A Geneticist was studying fruit colour in summer squashes, white fruit colour
   • (W) is dominant over yellow fruit colour (w) and disk shaped fruit (D) is dominant over long shaped fruit (d). Perform a cross between a heterozygous white fruit with disk shape, female plant with a heterozygous white fruit with a disk shape male. Compute the phenotypic ratio of the above cross using dihybrid
   • d. Explain gene interactions with a suitable cross for comb shape in domestic Write Short Notes on: (ANY FOUR) Marks
   • a. Prokaryotic cell
   • b. Structure of Plasma membrane
   • c. Abiotic factors of Ecosystem
   • e. Monohybrid cross with an example
   • f. Define:- Dominant allele, Heterozygous, Recessive allele, phenotype, Genotype

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