Download SGBAU BSc 2019 Summer 1st Sem Seed Technology Seed Development Seed Physiology n Introduction To Plant Breeding Question Paper

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Time : Three Hours| [Maximum Marks : 80

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B.Sc. (Part-1) Semester—1 Examination
SEED TECHNOLOGY (VOC)
(Seed Development, Seed Physiology and Introduction to Plant Breeding)

Note :— (1) All questions are compulsory.
(2) Draw neat and well labelled diagrams wherever necessary.

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1. (A) Fill in the blanks :
   1. Seed with endosperm is known as . ½
   2. __ is the measure of the quality of seed and involves the viability of seed. ½
   3. __ is the mechanism to prevent germination during unsuitable ecological conditions. ½
   4. Fusion of male gametes with female gametes is known as . ½
   (B) Choose the correct alternative (MCQ) :
   1. s required by the germinating seed for metabolism. ½
      

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      (a) Methane (b) Sulphur
      (c) Oxygen (d) None of above
   2. Pollination carried out by insect is known as : ½
      (a) Anaemophily (b) Entomophily
      (c) Hydrophily (d) None of above

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   3. Meiosis is a process in which there is formation of _ haploid spores. ½
      (a) One (b) Two
      (c) Three (d) Four
   4. Micropropagation was first put forth by ~ in 1960 in Orchid. ½
      (a) Flemming (b) Schenk
      

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      (c) Morell (d) Hildrebrandt
   (C) Answer in one sentence :
   1. Define Autogamy. 1
   2. Define apomixis. 1
   3. Define fertilisation. 1
   4. What is the use of electrophoresis ? 1

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2. Comment on :
   1. Texture of seed. 3
   2. Nuclear endosperm. 3
   3. Harvestable maturity of seeds. 3
   4. Sequential approach in testing. 3

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   OR
   1. Use of laboratory techniques. 3
   2. Electrophoresis. 3
   3. Diauxic development of fruit. 3
3. Describe in detail factors affecting seed germination and its implications 12 OR Explain :
   1. Chemical composition of seeds. 6

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   2. Seedling abnormalities in dicot crop. 6
4. Describe in brief seed germination stimulators and inhibitors 12 OR Explain :
   1. Seed dormancy and ecological implications. 6
   2. Seed deterioration during storage. 6

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5. Comment on :
   1. Seed longevity. 3
   2. Seed pelleting. 3
   3. Significance of micropropagation techniques. 3
   4. Artificial seed production. 3
   OR
   1. Seed vigour. 3

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   2. Treatment to minimize seed ageing 3
   3. Problems of seed dormancy. 3
   4. Scope and limitations in micropropagation techniques. 3
6. Discuss :
   1. Nature and scope of plant breeding. 3

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   2. DUS system. 3
   3. Structure of microsporangium. 3
   4. Development of female gametophyte. 3
   OR
   1. Structure of Megasporangium. 3
   2. Autogamy. 3

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   3. Grow out test in cotton. 3
   4. Objectives of plant breeding. 3
7. Explain :
   1. Bio-chemical basis of self incompatibility. 3
   2. Germination of pollen grain 3

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   3. Parts of plants used for propagation. 3
   4. Double fertilisation. 3
   OR
   1. Utility of male sterility in hybrid seed production 3
   2. Agencies for cross pollination, 3
   3. Structure of flower. 3

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   4. Cytoplasmic sterility. 3

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