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Important Questions for "b.sc,botany":

[1]

  1. Match the following concepts and contributors related to Botany.
  2. Describe the life cycle of the fungus that causes black wart disease of Potato.
  3. Write a brief note on the following: (i) Teleutospores, (ii) Pycnidiospores.

[2]

  1. What are blood groups? Discuss their inheritance.
  2. How would you prove that DNA is a genetic material? Explain with a suitable example.
  3. What is the Rhesus (Rh) reaction?

[3]

  1. Describe various numerical changes in chromosome number with illustration.
  2. Describe Mendel's first law of heredity.
  3. Enlist all the seven characters and their traits studied by Mendel.

[4]

  1. Describe the role of polyploidy in the evolution of wheat and mustard.
  2. In squashes, the difference in fruit weight between 400 gm and 1000 gm types is due to three gene pairs. What would be the phenotype and genotype of F1 and F2 in a cross between 400 gm and 1000 gm types?
  3. Write a short note on chemical mutagens.

[5]

  1. With suitable examples, prove that DNA or RNA is genetic material.
  2. Name two geneticists and describe their contributions for which they were awarded the Nobel Prize.
  3. Describe the following: (i) Character and trait, (ii) Ribosome, (iii) Isochromosomes, (iv) Gene, (v) T.H. Morgan.

[6]

  1. Write the various parts of Flower.
  2. Write a short note on Mycoplasma.
  3. Write the important characteristic features of Pteridophytes.

[7]

  1. Who is regarded as the father of Indian Paleobotany?
  2. Where is the Birbal Sahni Institute of Palaeobotany located?
  3. What type of leaf is called a Sporophyll?

[8]

  1. What do you understand by the term Heritage Botany?
  2. Describe the working of centrifuge and laminar air flow.
  3. Describe the features of several groups of fungi, according to Ainsworth and Bisby (1995).

[9]

  1. Explain plasmid pBR322 and its characteristics.
  2. How did Hershey and Chase prove that DNA is a genetic material?
  3. Explain nucleosome model with diagram.

[10]

  1. Describe the aim, scope and importance of palynology.
  2. Calculate the standard deviation, variance and coefficient of variance from the given table.
  3. Describe Sarpgandha and Cotton in detail.

[11]

  1. Differentiate between Asteraceae and Rubiaceae.
  2. Explain the distinguishing features of family Poaceae and describe its economic importance.
  3. Explain the formation of monosporic and bisporic embryo sac by giving suitable examples.

[12]

  1. Who is considered the Father of Botany?
  2. Where are compound pollen grains found?
  3. Which organelle is called the powerhouse of the cell?

[13]

  1. Discuss the basis of Linnaeus' system of classification.
  2. What is the economic importance of the family Brassicaceae?
  3. Describe the family Liliaceae or Lamiaceae.

[14]

  1. Explain the Economic importance of bacteria.
  2. Write a brief comment on the Nitrogen cycle.
  3. Describe the structure and mode of replication/multiplication of Tobacco Mosaic Virus (TMV).

[15]

  1. Describe briefly the characteristic features of Rhodophyceae.
  2. Describe briefly the range of thallus organisation in Chlorophyceae.
  3. Describe the classification of Bryophytes studied.

[16]

  1. Mention the differences between prokaryotic and eukaryotic translation with figures
  2. Write short notes on Regulation of Protein Synthesis and Reverse transcription
  3. Discuss in detail the RNA polymerase and promoter sequence found in prokaryotes and eukaryotes

[17]

  1. Describe the symptoms of Yellow Vein Mosaic of Bhindi.
  2. Explain Little Leaf of Brinjal.
  3. What is Phytogeography? Describe the botanical regions of India.

[18]

  1. Describe the threats to biodiversity OR Write a note on sustainable management of water
  2. Discuss the main characteristics of population dynamics OR Write short note on Potato scab disease and Ozone depletion
  3. Differentiate between National park & sanctuaries, Pandemic and endemic, Scab and canker, Blight and red rot OR Write short note on Germplasm conservation and Value of biological diversity in food and ecological security

[19]

  1. Describe gene transfer methods in plants OR Describe mechanism of enzyme action
  2. Write note on structure and properties of amino acids OR Write note on second messengers
  3. Write an essay on gene cloning

[20]

  1. Describe the morphology of Chromosome OR Discuss hybridization with some suitable examples
  2. Describe history of plant breeding in brief OR Discuss sex determination in plants
  3. Discuss the role of plant breeding work on wheat

[21]

  1. Describe cleavage polyembryony in brief
  2. Draw the floral diagram and floral formulae of Acacia sp.
  3. Write short notes on Tylosis, Lenticels, and Hydathodes

[22]

  1. Power House of the Cell
  2. Structure and function of Ribosomes
  3. Chromosomal aberrations and their importance

[23]

  1. Differentiate monoadelphous and diadelphous stamen
  2. Describe merits and demerits of Bentham and Hooker system of classification
  3. Describe important floral characters of family Cucurbitaceae

[24]

  1. Write about Detritus food chain
  2. Describe in brief crossing over
  3. What do you understand by meiosis? Describe different stages of meiosis with the help of neat and labelled diagrams

[25]

  1. Differentiate monocot and dicot stem
  2. Merits and demerits of Engler and Pranti system of classification
  3. Structural modification in leaves to avoid transpiration

[26]

  1. Differentiate between monosomic and trisomic
  2. Describe briefly significance of Mutation
  3. With the help of labelled diagrams describe the nucleus of the cell

[27]

  1. The presence of what distinguishes a plant cell from an animal cell?
  2. The part of a flower that can carry out photosynthesis is?
  3. Who is known as the father of Plant Physiology?

[28]

  1. The epidemics of Rust disease are caused by?
  2. Which bacteria are involved in curd production?
  3. Puccinia graminis is classified as?

[29]

  1. Who is the father of Indian Palaeobotany?
  2. Modified vascular tissue, known as transfusion tissue, is found in?
  3. Cycas coralloid root performs which main function?

[30]

  1. Gemmae produced in Gemmae cup are of which type?
  2. Seaweeds are found in which algae class?
  3. Algae growing on snow are termed as?

[31]

  1. Polystelic stem is seen in
  2. Dimorphic branches and leaves are characteristic features of
  3. Ephedrine is obtained from which plant

[32]

  1. In Navicula, the gametes which are
  2. The urn-shaped structure in Polysiphonia is
  3. Gynandrosporous filaments of Oedogonium bear

[33]

  1. What do you mean by seed certification? Discuss its scope and method of seed certification in detail.
  2. Write a detailed note on National Seed Corporation.
  3. Explain in brief the seed production in sugarcane.

[34]

  1. Discuss the seed production techniques in rice.
  2. Write a short note on embryo and endosperm.
  3. Write a short note on grow out test.

[35]

  1. What is seed certification? Discuss the method of seed certification in detail.
  2. Write detailed notes on National Seed Corporation and Synthetic and Composite Variety.
  3. Write a note on male sterility and its use in hybrid seed production.

[36]

  1. Describe the technique of emasculation and pollination in rice. Also write the precautions taken during emasculation and pollination.
  2. Describe pureline selection in wheat.
  3. Describe composite varieties of maize.

[37]

  1. Which breeding method would you apply to transfer disease resistance from one variety to another variety? Describe in detail the procedure of a dominant gene transfer.
  2. Describe pedigree method of breeding in wheat.
  3. Describe in brief the use of allopolyploidy in crop improvement.

[38]

  1. Write a detailed note on plant variation and its causes.
  2. What is recurrent selection? Discuss the different types of recurrent selection in detail.
  3. Define mutation. Discuss the role of mutation breeding in crop improvement.

[39]

  1. What is bulk method of selection?
  2. Define the terms mutation, mutagen and mutant.
  3. Write a note on chemical mutagens.

[40]

  1. What is the pure line theory?
  2. Differentiate between heterosis and inbreeding depression.
  3. What is male sterility? Describe the various types of male sterility in detail with suitable diagram.

[41]

  1. Define transpiration. Discuss the factors affecting the rate of transpiration.
  2. Discuss the scope and importance of crop physiology in agriculture.
  3. Discuss the physiologic role of auxins.

[42]

  1. Explain the importance of geological time table.
  2. Briefly describe the economic importance of Bryophytes.
  3. Write a note on polyembryony.

[43]

  1. Why did Mendel select pea as experimental material? Explain the law of segregation with the help of a suitable example.
  2. Describe different stages of mitotic division in detail.
  3. Differentiate between incomplete dominance and co-dominance.

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