IFS Botany Papers 2001

IFS Botany 2001

Paper-I

Section-A

  1. Answer any four of the following (Your answers should not exceed 150 words for each of the sub-sections): (10 × 4 = 40)

    1. Write short notes on:

      1. Thermophylliceubacteria

      2. Symbiotic nitrogen-fixing bacteria

      3. Microbes which produce economically useful products

      4. Oncogenic viruses

    2. Answer the following:

      1. Write a short account of host specific toxins.

      2. What is ‘Koji’ fermentation? How is it formed and what are the products produced by it?

      3. Bio-deterioration caused by microbial organisms in agricultural produce. Explain this phenomenon.

      4. What are fungicides and how are they applied in standing crops and plant products?

    3. Explain the following:

      1. Canker

      2. Blight

      3. Galls

      4. Mosaic

    4. Describe the following:

      1. Heterocysts

      2. Akinetes

      3. Water bloom algae

      4. Witches'broom

    5. Write short notes on:

      1. Diatoms

      2. Viroids

      3. Mycoplasma

      4. Proteases

  2. Answer the following questions

    1. Give an account of various kinds of biofertilisers.

    2. How do food infection and food poisoning Occur? Explain (20 × 2 = 40).

  3. Answer the following questions

    1. The rusts of cereals are polymorphic in nature. Explain this statement and draw the lifecycle and control measures.

    2. Give an account of the improvements made in activities of micro-organisms in forestry, agriculture, industry and environment (20 × 2 = 40).

  4. Describe the following: (10 × 4 = 40)

    1. Economic importance of blue-green algae

    2. Sporophyte of Selaginella

    3. Archegoniophore of Marchantia

    4. Sporophyte of Marsilea

Section B

  1. Answer any four of the following (Your answers should not exceed l50words for each of the sub-sections): (10 × 4 = 40)

    1. Distinguish the following:

      1. Storied and non-storied wood

      2. Free central placentation and parietal placentation

      3. Interxylary and intraxylary phloem

      4. Latex-tubes and resin canals

    2. Describe the following:

      1. Equisetum species are not primitive vascular cryptogams

      2. Stamens in Cucurbitaceae

      3. Translators in Asclepiadaceae

      4. Anomalous secondary growth

    3. Describe the following:

      1. Reproductive structure in Lycopodium

      2. External morphology of Ephedra

      3. Protein Synthesis

      4. Cycadofihicales

    4. Write short notes on the following:

      1. Ecosystem

      2. Floral diagram in Solanaceae

      3. Distribution of Williamsonia

      4. Carpels in dicots

    5. Briefly describe the following:

      1. Kranz Syndrome

      2. Herbarium Techniques

      3. Type Specimen

      4. Hydrosere

  2. Answer the following: (10 × 4 = 40)

    1. Discuss photoperiodism and flowering.

    2. What is experimental embryology? Explain.

    3. What is Ginkgo biloba called a living fossil?

    4. Write about the reproduction in Taxus.

  3. Answer the following: (10 × 4 = 40)

    1. Write an account of the family Rubiaceae and compare it with that of Verbenaceae.

    2. Describe the family Cucurbitaceae, giving floral diagrams, floral formulae.

    3. Where are the National Botanical Gardens and Lloyd Botanical Gardens? How are herbaria in botanical gardens arranged?

    4. Write about the economic importance of the family Asteraceae.

  4. Answer the following questions

    1. Mention he botanical name, family and plant part used of the following: (10 × 2 = 20)

      1. Teak

      2. Heeng

      3. Jute

      4. Turmeric

      5. Sarpagandha

      6. Cocoa

      7. Cotton

      8. Bamboo

      9. Opiuni

      10. Peppermint

    2. Write an account of Takhtajan system of classification of plants (20).

Paper-II

Section A

  1. Write short notes on any four of the following in about 150 words each:

    1. Sex Chromosomes (10)

    2. ER (10)

    3. Correlation and regression (10)

    4. Heterosis (10)

    5. Colchicine and EMS (10).

  2. Describe the process of Meiosis sequentially with suitable diagrams. Contrast in with Mitosis (40).

  3. Answer the following questions

    1. What are the molecular mechanisms of mutations? Discuss the consequences of any two of them (20).

    2. How do tetraploidy and aneuploidy originate? What are their roles in Plant Breeding (20)?

  4. Answer the following questions

    1. Discuss the role of Biotechnology in Agriculture (20).

    2. Ontogenyr repeats Phylogeny. Discuss (20).

Section B

  1. Write short notes on any four of the following in about 150 words each:

    1. Seed (10)

    2. Social Forestry (10)

    3. alpha-oxidation (10)

    4. TRTPS (10)

    5. Haze (10).

  2. Answer the following questions

    1. Distinguish between growth movements and stomata movements (20).

    2. Define and distinguish any four major ecosystems of India (20).

  3. Answer the following questions

    1. Classify and characterisephy to hormones (20)

    2. Enumerate the secondary plant products with emphasis on the roles of pigments (20).

  4. Explain Biogeochemical Cycles. Describe the hydrological cycle in detail (40).