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Important Questions for "b.sc,botany":

[1]

  1. Match the following concepts and contributors related to Botany.
  2. Write the salient features of Ascomycotina and give the life-cycle of Peziza. Write the salient features of Basidiomycotina and give the life-cycle of Agaricus.
  3. Write short notes on the following: (i) Laminar air flow, (ii) Autoclave, (iii) Tobacco Mosaic Virus, (iv) Structure of Bacteria, (v) Chlorella.

[2]

  1. What are blood groups? Discuss their inheritance.
  2. If the basic chromosome number is 7 in a class of individuals, what will be the number of chromosomes in the following: (i) Nullisomic, (ii) Monosomic, (iii) Trisomic, (iv) Tetrasomic?
  3. The X chromosome of male is transmitted into male through female. Explain.

[3]

  1. What do you mean by multiple alleles? Give a brief account of multiple allelism.
  2. Describe various substages of Prophase I of meiotic cell division. Give significance of meiosis.
  3. What is a metacentric chromosome?

[4]

  1. Define mutation. Describe the role of mutations in crop improvement.
  2. What do you understand by multiple alleles? Describe it with the help of A, B, O blood group in human beings.
  3. 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?

[5]

  1. Describe the autobiography of G.J. Mendel. Why did he select pea plants for his experiments?
  2. Explain the chromosomal theory of inheritance.
  3. Describe the following: (i) Character and trait, (ii) Ribosome, (iii) Isochromosomes, (iv) Gene, (v) T.H. Morgan.

[6]

  1. Write a short note on Mycoplasma.
  2. Write different types of reproduction in Algae.
  3. Describe economic importance of Fungi.

[7]

  1. Who is regarded as the father of Indian Paleobotany?
  2. Where is the Birbal Sahni Institute of Palaeobotany located?
  3. What is seed dormancy caused by?

[8]

  1. What do you understand by the term Heritage Botany?
  2. Mention the various types of vegetative reproduction in Lichens.
  3. Describe the disease cycles and its control measures of early blight of potato, red rot of sugarcane, wilting of arhar and citrus cancer.

[9]

  1. Describe the structure of DNA at the level of increasing complexity.
  2. Discuss the role of translation initiation factor in prokaryotes.
  3. Explain the characteristics of different forms of DNA.

[10]

  1. Write the botanical name and families of two spices yielding plants.
  2. Write a note on Van Mahotsava.
  3. Describe the origin, domestication, improved varieties and different uses of Sugarcane.

[11]

  1. Explain the distinguishing features of family Poaceae and describe its economic importance.
  2. Describe the anomalous secondary growth in the stem of Dracaena.
  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 is glyoxylate formed in glyoxylate cycle?
  3. What is the initiator codon for protein synthesis?

[13]

  1. Write the name of the father of Indian embryology.
  2. Give a detailed account of the family Cucurbitaceae and mention the botanical names of five plants of economic importance from the same family.
  3. What is the economic importance of the family Brassicaceae?

[14]

  1. Explain Nutritional types of bacteria.
  2. Describe the features of Agaricus fungus.
  3. Describe different methods of Genetic recombination in bacteria.

[15]

  1. Write a short note on Coenobium.
  2. Describe briefly the range of thallus organisation in Chlorophyceae.
  3. Describe the classification of Bryophytes studied.

[16]

  1. Differentiate between Ribozymes and Isozymes, TATA box and PRIBNOW box, Inducible and Repressible enzymes, and Somaclonal and Gametoclonal variation
  2. Write in detail the process of gene cloning with host or without host
  3. Discuss in detail the RNA polymerase and promoter sequence found in prokaryotes and eukaryotes

[17]

  1. Write a short note on hotspots of biodiversity.
  2. Describe symptoms, causal organism, disease cycle, and control of Late Blight of Potato.
  3. What is Phytogeography? Describe the botanical regions of India.

[18]

  1. Differentiate between Deforestation and desertification, Endangered and extinct species, Hydrosphere and atmosphere, BOD and COD OR Write a note on Various tactics employed in forest management and Effect of increasing CO2 concentration on climate
  2. 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
  3. Describe the symptoms, etiology, and control of Late blight of potato and Mosaic diseases

[19]

  1. Describe gene transfer methods in plants OR Describe mechanism of enzyme action
  2. Write an essay on gene cloning
  3. Write an essay on microbial and environmental biotechnology

[20]

  1. Describe the morphology of Chromosome OR Discuss hybridization with some suitable examples
  2. Discuss the role of plant breeding work on wheat
  3. Describe the role of Biotechnology in Crop improvement

[21]

  1. Discuss anomalous secondary growth in Chenopodium
  2. Write short notes on Tylosis, Lenticels, and Hydathodes
  3. Explain Double fertilization and its significance

[22]

  1. Structure and function of Ribosomes
  2. Stages of Meiosis with diagrams
  3. Essay on Chromosomes with Nucleosome model

[23]

  1. Differentiate monoadelphous and diadelphous stamen
  2. Write short notes on economic importance of family Rutaceae
  3. Describe organization of vascular tissue in angiosperms

[24]

  1. Xerophytic ecological character of Casuarina
  2. Write about Detritus food chain
  3. What is Plant succession? Give a detailed account of Xerosere and Hydrosere

[25]

  1. Differentiate monocot and dicot stem
  2. Difference between inter and intrafascicular cambium
  3. Merits and demerits of Engler and Pranti system of classification

[26]

  1. Discuss briefly about cytoplasmic inheritance
  2. With the help of labelled diagrams describe the nucleus of the cell
  3. Discuss the sex determination in plants with the help of suitable examples

[27]

  1. Water in plants is transported by?
  2. The cuticle is absent in?
  3. The chromosome number of rice is?

[28]

  1. White rust of crucifers is caused by?
  2. The fruiting body of Agaricus is called?
  3. Wheat plant is referred to as the primary host of Puccinia due to?

[29]

  1. Who is the father of Indian Palaeobotany?
  2. Nephrolepis is also called as?
  3. Cycas resembles Pteridophytes because of?

[30]

  1. The female sex organ of Polysiphonia is called?
  2. Why is Nostoc considered a prokaryote?
  3. Litmus is obtained from which biological source?

[31]

  1. Apospory was first observed in which pteridophyte
  2. Mixed Protostele is found in
  3. Which of the following plants are heterosporous except

[32]

  1. Which character of Vaucheria is not present in chlorophyceae
  2. The algae which live endophytically in coralloid roots of Cycas is
  3. In Oscillatoria gas vacuoles are formed when

[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. What is seed certification? Discuss the different precautions being considered during seed certification.
  2. Write a short note on grow out test.
  3. Comment upon National Seed Corporation.

[35]

  1. What is seed certification? Discuss the method of seed certification in detail.
  2. What is seed viability? How would you test seed viability of wheat seed? Discuss the method in detail.
  3. Discuss in detail the importance of seed technology.

[36]

  1. Describe pureline selection in wheat.
  2. Describe the various applications of genetic engineering in crop improvement.
  3. Describe the origin of hexaploid wheat.

[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. Give the list of hybrid varieties developed in sunflower, pigeonpea, bajra, maize and mustard.

[38]

  1. Write in brief the causes of inbreeding depression.
  2. Write a detailed note on aneuploidy.
  3. Write a detailed note on plant variation and its causes.

[39]

  1. Define the terms mutation, mutagen and mutant.
  2. Write a note on chemical mutagens.
  3. Write short notes on the procedure of back cross method of breeding, utility of allopolyploidy in crop improvement, and apomixis.

[40]

  1. What is the pure line theory?
  2. What is male sterility? Describe the various types of male sterility in detail with suitable diagram.
  3. What is backcross method? Describe the procedure of backcross method of breeding in transferring of a recessive gene from one variety to another in detail.

[41]

  1. Discuss the scope and importance of crop physiology in agriculture.
  2. What is Respiratory Quotient (R.Q.)?
  3. State the Law of Limiting Factors.

[42]

  1. Write a note on Anatropous ovule.
  2. Write a note on polyembryony.
  3. Write a detailed account on double fertilization.

[43]

  1. Define mutation. Differentiate between spontaneous and induced mutations. Provide a list of chemical and physical mutagens.
  2. Describe different stages of mitotic division in detail.
  3. Write down the properties of the genetic code.

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