B.Sc Hons Botany Sem-3 CC-7 Calcutta University Exam Question Paper

B.Sc Hons Botany Sem-3 CC-7 Calcutta University Exam Question Paper


2020
BOTANY — HONOURS
Paper: CC-7
Full Marks: 50
The figures in the margin indicate full marks.
Candidates are required to give their answers in their own words
as far as practicable.

  1. Answer any five of the following :
    (a) Define Holotype. 2
    (b) Define taxon and nothotaxon. 1+1
    (c) Name the largest herbarium in the World. Mention its acronym. 1+1
    (d) Distinguish between phenetics and cladistics. 2
    (e) What do you mean by OTU? Give one example. 1½+½
    (f) What is virtual herbarium? 2
    (g) What is basionym? Cite one example. 1+1
  2. Write notes on any two of the following : 5×2
    (a) Rules of Priority.
    (b) Palynology in relation to taxonomy.
    (c) Conditions of valid publications.
    (d) Role of herbaria in teaching and research.
  3. Answer any three of the following :
    (a) What do you mean by natural system of classification? Give an outline of Bentham and Hooker’s System of Classification (1862-1883) up to Series. Mention two merits and two demerits of this
    system. 1+5+(2+2)
    (b) Briefly describe the floral morphology of Apiaceae (Umbelliferae) with floral diagram. State the primitive features of the family Magnoliaceae. Give one example of each of these two families.
    4+4+1+1
    (c) Distinguish between Musaceae, Cannaceae and Zingiberaceae based on floral characters. Name any one economically important plant each from Musaceae and Zingiberaceae. 8+(1+1)
    (d) Compare the androecium characters of Asteraceae, Euphorbiaceae and Cucurbitaceae. Name one economically important plant of each family. 7+3
    (e) Answer any two of the following :
    (i) Comment on the Biosystematics and the Encyclopedic phase of taxonomy. 2½+2½
    (ii) What is neotype? Distinguish it from isotype. 2½+2½
    (iii) Role of secondary metabolites in angiosperm taxonomy citing two examples. 2½+2½
    (iv) State the Principles of ICN. 5

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