IFS Botany Papers 2000

IFS Botany 2000

Paper-I

Section A

  1. Answer any four of the following: (Your answers should not exceed 150 words for each sub-section)

    1. Explain the following:

      1. Mollicute

      2. Cybrids

      3. Viroids

      4. Elicitors

    2. Distinguish the following:

      1. Biodegradation and bioremediation

      2. Disease and disorder

      3. Macrandrous and Nanandrous

      4. Protostele and siphonostele

    3. Explain the following:

      1. Oncogenesis

      2. Bioleaching

      3. Crozier

      4. Polarity

    4. Give a brief account of the following:

      1. Biopesticides

      2. Suspension cell culture

      3. Archesporium

      4. Rhizophore.

    5. Write short notes on the following:

      1. Trabaculae

      2. Ligule

      3. Sorus

      4. Inducium

  2. Answer the following questions

    1. Mention the symptoms, causal organism, mode of infection and control measures of:

      1. Stripe disease of barley

      2. Citrus canker

    2. Discuss the molecular basis of host-parasite interaction.

  3. Answer the following questions

    1. Describe the process of liquid waste treatment by micro-organisms.

    2. Describe the role of Phytotoxin pathogenesis in plant

  4. Describe the following

    1. Totipotency of plant cells

    2. Economic importance of marine algae

    3. Structure of antheridiophore in Funaria

    4. Gametophytes in Selaginella

Section B

  1. Answer any four of the following: (Your answer should not exceed 150 words for each of the sub-section)

    1. Distinguish the following

      1. Perigenous and Mesogenous Stomata

      2. Phyllospermous and Stachyspennous

      3. Axile and Parietal placentation

      4. Synergid and Egg cells

    2. Describe the following

      1. Distribution of cycads in India

      2. NPC-system

      3. Pollenia

      4. Stamens in Magnoliaceae

    3. Describe the following

      1. Ovule of Taxus

      2. Male organs of Williamsonia

      3. Female inflorescence in Onetum

      4. Ovule bearing organs of Cycadofilicales

    4. Describe the following

      1. Beta taxonomy

      2. Stamens in Leguminosae

      3. Inflorescence in Euphorbiaceae

      4. Carpels in Ranunculaceae

    5. Describe the following:

      1. Floral formula of Apiaceae

      2. Fruit of wheat

      3. Distribution of Welwitschia

      4. Cytomixis

  2. Answer the following:

    1. Compare the characters of Cycadales and Bennettitales.

    2. Describe different types of Endosperms.

    3. Adventive embryogenesis

    4. Describe the male flower of Ephedra.

  3. Answer of following:

    1. Compare the floral structure of

      1. Arecaceae and Liliaceae

      2. Rubiaceae and Verbenaceae.

    2. Describe the floral characteristics of orchids.

    3. Economic importance of Dipteocarpaceae.

    4. Discuss the importance of Herbarium.

  4. Answer the following questions

    1. Mention the botanical name, family and the plant parts used of the following:

      1. Rice

      2. Lentil

      3. Walnut

      4. Heeng

      5. Clove

      6. Fennal

      7. Ashwagandh

      8. Cocaine

      9. Mamla hemp

      10. Coir

    2. Describe a natural system of classification up to the rank of orders of flowering plants.

Paper-II

Section A

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

    1. Ultra-structural details of an eukaryotic cell (Draw neat labeled diagrams) (10).

    2. Structure and functions of ribosomes (10).

    3. Ultra-structure of plasma membrane (10).

    4. Cytoplasmic inheritance (Give suitable examples) (10).

    5. Hybrid vigour and its important in agriculture (10).

  2. Write an account of genetic code and regulation of gene expression (40).

  3. Answer the following questions

    1. Given an illustrated account of linkage and crossing over (20).

    2. Write a brief account of evidences of organic evaluation (20).

  4. Answer the following questions

    1. What is meant by coefficient of variation? Calculate the coefficients of variation in the following example: Numbers of leaves per plant Set I: 20, 14, 18, 16, 15, 18, 17, 21 Set II: 12, 20, 11, 21, 18, 22, 10, 23 Draw a conclusion on the basis of the c. v. Of the 2 sets (20)

    2. Explain the following statistical terms:

      1. Null hypothesis

      2. Degrees of freedom (20)

Section B

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

    1. Carbon cycle in an ecosystem (Give diagrammatic representation) (10).

    2. Cyclic photophosphorylation (10)

    3. Acid rain and its impact on vegetation and human habitation (10).

    4. Community dynamics (10).

    5. Conservation of endangered plant species (10).

  2. Given an account of structural, biochemical and metabolic changes associated with senescence of flowers and ornamentals (40).

  3. Answer the following questions

    1. Write a short notes on Krebs'cycle or citric acid cycle (20).

    2. What is meant by Plant Succession?

    Discuss the phenomenon in relation to a drying pond giving different successional stages (20).

  4. Answer the following questions

    1. What is meant by smog? How does smog affect vegetation and human health (20)?

    2. Given a brief account of various factors responsible for water pollution. Suggest methods to control water pollution of important rivers of India (20).