BBYCT-133 · December 2020 · English
IGNOU BBYCT-133 December 2020 Previous Year Question Paper
Plant Ecology And Taxonomy
Structured previous year question paper for BBYCT-133, December 2020 session.
Max marks: 50 · Questions: 7
Verified: 29 Jul 2026
BACHELOR OF SCIENCE (GENERAL)
(BSCG)
Term-End Examination
February, 2021
BBYCT-133 : PLANT ECOLOGY AND TAXONOMY
Time : 2 hours Maximum Marks : 50
Note: Attempt any five questions. Draw neat and
well-labelled diagrams wherever necessary.
Q1.Define any five of the following : 5x2=10
(a) Autecology
(b) Internal Environment
(c) | Edaphic Factors
(d) | Saprophytes
(e) Colluvial Soil
(f) Gravitational Water
(g) | Phytogeography
Q2.Make neat and labelled diagrams of any two of the following : 2x5=10
(a) Hotspots of India
(b) Graphical Representation of a Food Web
(c) | Ecotone
(d) J-shaped Population Growth Curve
Q3.Write a detailed account on any one of the following : 10
(a) Adaptive Features in Xerophytes
(b) Physical Properties of Soil
Q4.Define taxonomic key and list its types. What are the characteristics of a good key ? How are the keys constructed and used ?
Q5.What are the disadvantages of using a common name and advantages of using scientific name of an organism ? List different kinds of ‘Types’ and describe any two of them.
Q6.(a) List the objectives of plant classification. Discuss merits and demerits of classifications proposed by Linnaeus and by Bentham and Hooker. 5
(b) What is a Cladogram ? Explain the process of building and interpreting a hypothetical cladogram by grouping any four characters of your choice.
Q7.Write short notes on any four of the following : 4x2 5 =10
(a) Role of a Botanical Garden
(b) Taxonomic Evidence from Palynology
(c) Species Concept
(d) Principles of Binomial Nomenclature
(e) Advantages of Numerical Taxonomy