Download SGBAU BSc 2019 Summer 3rd Sem Botany Angiosperm Systematics ANatomy n Embryology Question Paper

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B.Sc. (Part-II) Semester-III Examination

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BOTANY

(Angiosperm Systematics, Anatomy and Embryology)

Time : Three Hours] [Maximum Marks : 80

Note : (1) There are SEVEN questions in all.

(2) Question No. 1 is compulsory and carries 8 marks.

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(3) Question No. 2 to 7 carry equal marks.

(4) Draw well labelled diagrams wherever necessary.

1. (A) Fill in the blanks :
   1. The _______ venation is found in Dicot leaves.
   2. Bentham and Hooker’s system is type of _______ system of classification.
   3. Wedge shaped phloem is found in the _______ stem.

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   4. Umbel inflorescence is diagnostic feature of family _______.
   (B) Choose the correct alternatives (MCQ)
   1. Many pulses of daily use belong to family
      1. Verbenaceae
      2. Fabaceae
      3. Lamiaceae
      4. Solanaceae

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   2. Royal Botanical Garden in India located at :
      1. Kolkata
      2. Banglore
      3. Pune
      4. Delhi

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   3. Which is the nutritive layer of anther ?
      1. Epidermis
      2. Tapetum
      3. Endothecium
      4. None of these

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   4. Medullary vascular bundles are present in the stem of :
      1. Nerium
      2. Bignonia
      3. Maize
      4. Boerhaavia

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   (C) Answer in ONE sentence
   1. Mention the special type of inflorescence in Euphorbia.
   2. What is herbarium ?
   3. What are the components of Phloem ?
   4. What is chalazogamy ?

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2. Explain :
   1. Importance of biodiversity
   2. Principles of nomenclature
   3. Royal Botanical Garden, Kolkata.
   OR
   1. Herbarium

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   2. Binomial nomenclature
   3. Bennettitalean theory of Angiosperm evolution
3. Describe Bentham and Hooker system of classification with its merits and demerits. OR Explain :
   1. Floral structure of Malvaceae.
   2. Economic importance of family Apiaceae.

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4. Comment on :
   1. Floral structure in Euphorbiaceae.
   2. Economic importance of Poaceae.
   3. Systematic Position of Lamiaceae
   OR
   1. Economic importance of Solanaceae

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   2. Floral diagram of Asclepiadaceae
   3. Inflorescence in Asteraceae
5. Discuss on :
   1. Characteristics of Heartwood and Sapwood.
   2. Parenchyma and Collenchyma.

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   OR
   1. Primary structure of Monocot root
   2. Structure and function of Xylem.
6. Explain :
   1. Anomalies in Secondary structure Bignonia stem.
   2. Primary structure of Monocot stem.

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   3. Internal structure of Maize leaf.
   OR
   1. Anomalous primary structure in Boerhaavia stem.
   2. Internal structure of Nerium leaf
   3. Anomalies in Secondary structure Dracaena stem.

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7. Comment on :
   1. Double fertilization and triple fusion.
   2. Development of male gametophyte.
   3. Anatropous ovule (well labelled diagram only).
   OR
   1. Nuclear endosperm.
   2. Suspended animation.

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   3. Bisporic embryo sac

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