BGYCT-137 · June 2025 · English
IGNOU BGYCT-137 June 2025 Previous Year Question Paper
STRATIGRAPHY AND PALAEONTOLOGY
Structured previous year question paper for BGYCT-137, June 2025 session.
Max marks: 50 · Questions: 4
Verified: 10 Aug 2026
BACHELOR OF SCIENCE
(GENERAL) (BSCG)
Term-End Examination
June, 2025
BGYCT-137 : STRATIGRAPHY AND
PALAEONTOLOGY
Time : 2 Hours Maximum Marks : 50
Note: All questions are compulsory. Marks
allotted for each question are indicated
against it. Draw well labelled diagrams,
wherever necessary.
Q1.Briefly answer any five of the following questions : 5x2=10
(a) What is stratigraphy ?
(b) Define Key bed.
(c) List the names of main Proterozoic basins of Peninsular India.
(d) What are three groups of the Cretaceous succession of Tiruchirapalli ?
(e) Differentiate between living and index fossils.
(f) What are microfossils ?
(g) Distinguish between bivalves and brachiopods.
(h) List the four types of suture patterns of cephalopods.
Q2.Write short notes on any four of the following : 4x5=20
(a) Role of climate in the evolution of horse
(b) Process of permineralisation
(c) Morphological features of corals
(d) Geological history of bivalves and gastropods
(e) Lithostratigraphic classification
(f) Stratigraphy of the Siwalik group
(g) Age and duration of the Deccan traps
Q3.(a) What are fossils ? Discuss the importance of fossils in geology. 10
(b) Discuss the morphology and geological history of trilobites.
Q4.Answer any one of the following :
(a)
(i) Describe any five principles of stratigraphy. 5
(ii) Give an account of physical and structural divisions of India. 5
(b)
(i) Discuss the lithostratigraphy of the Palaeozoic succession of Spiti. 5
(ii) Describe in detail the stratigraphy of Vindhyan supergroup. 5 ART |