Birbal Sahni Institute Jamun Study MCQ — 94 Practice Questions with Answers

Q1. Consider the following statements regarding the biogeographical interpretation of the BSIP Jamun study: 1. The origin of Syzygium was earlier believed to be restricted to Australia or Southeast Asia. 2. The new study supports an exclusively Southeast Asian origin for Syzygium. 3. Earlier Indian fossil reports ranging from around 60 to 20 million years ago had not been comprehensively reassessed before this work. 4. The study rejected statistical methods and relied only on field collection notes. Which of the statements given above are correct?

Q2. Consider the following statements regarding institutions connected with the Jamun study: 1. The study was led by the Birbal Sahni Institute of Palaeosciences, an autonomous institute of DST. 2. The Academy of Scientific and Innovative Research was associated with the study. 3. Departments of Tribhuvan University in Nepal were associated with the study. 4. Research Matters also identifies the team as involving BSIP, AcSIR and Tribhuvan University, Nepal. Which of the statements given above are correct?

Q3. Consider the following statements about the origin and earlier hypotheses regarding Syzygium in the BSIP Jamun study: 1. The study concludes that Syzygium originated only in Australia or Southeast Asia. 2. Researchers noticed inconsistencies between fossil evidence and molecular phylogenetic timelines that estimated an origin around 51 million years ago. 3. The study points to an East Gondwanan origin of Syzygium dating back to about 80 million years ago. 4. The study treats India as a major centre of early diversification of the genus. Which of the statements given above are correct?

Q4. Consider the following statements about nomenclature and leaf traits in the Jamun fossil study: 1. The fossil species was named after a living animal genus. 2. The fossil was described as having spiny leaves with parallel venation. 3. The name Syzygium paleosalicifolium honours its closest living relative, Syzygium salicifolium. Which of the statements given above are correct?

Q5. Consider the following statements about the fossil evidence described in the Jamun study: 1. The study reported 11 well-preserved fossil leaves of Syzygium. 2. The leaves were from Early Miocene deposits dated around 20 million years ago. 3. The fossil leaves were assigned to the Holocene period. Which of the statements given above are correct?