BBYCT-133 · December 2023 · English
IGNOU BBYCT-133 December 2023 Previous Year Question Paper
Plant Ecology And Taxonomy
Structured previous year question paper for BBYCT-133, December 2023 session.
Max marks: 50 · Questions: 8
Verified: 29 Jul 2026
B. SC. (GENERAL)
(BSCG)
Term-End Examination
December, 2023
BBYCT-133 : PLANT ECOLOGY AND TAXONOMY
Time : 2 Hours Maximum Marks : 50
Note :
(i) Attempt five questions in all.
(ii) Draw neat and well-labelled diagrams
wherever necessary.
(iii) Question No. 1 is compulsory.
Q1.Define any five of the following : 5x2=10 @ Predation
(i) Ecotone Gii) Trophic level
(iv) Numerical taxonomy
(v) Flora
(vi) Cladistics
(vii) Mutualism
(viii) Ecotype
Q2.Differentiate between any two of the following :
(6) Foundation species and Keystone species
(1) Food web and Food chain
(ii) Apomorphic and Plesiomorphic characters
(iv) Isotype and Holotype
Q3.(a) Describe merits and demerits of Bentham and Hooker's natural system of classification. 7
(b) Write a note on phenograms.
Q4.(a) What is soil ? Add a note on the factors affecting soil formation. 5
(b) Discuss species concept.
Q5.(a) Discuss any five principles of Binomial nomenclature. 5
(b) Describe adaptive features in xerophytes.
Q6.(a) Describe the role of a botanic garden. 5
(b) Discuss different biotic components of an ecosystem.
Q7.Write short notes on any four of the following : 4x2'4=10
(a) Clades
(b) Emergent hydrophytes
(c) Cycling of phosphorus
(9) Typification
(e) Alpha taxonomy
(f) Shelford’s law of tolerance
(viii) SHEET
Q8.1. 0.
Q9.wee