MCQ
Birbal Sahni Institute Jamun Study MCQ - Practice Questions with Answers
Solve 94 Birbal Sahni Institute Jamun Study questions for RAS/RPSC preparation.
Practice questions
Q1Consider 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?
Statements 1 and 3 are correct. DST explicitly notes the older Australia/Southeast Asia belief and the lack of comprehensive reassessment of Indian reports from about 60-20 million years ago. Statement 2 is incorrect because the study points to East Gondwanan origin with India as an early diversification centre. Statement 4 is incorrect because DST says statistical methods were applied.
Q2Consider 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?
All four statements are true. DST names BSIP as the DST autonomous institute leading the study and also lists AcSIR and departments of Tribhuvan University. Research Matters independently describes the team as involving BSIP, AcSIR and Tribhuvan University, Nepal.
Q3Consider 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?
Statement 1 is false because Australia or Southeast Asia was the earlier belief, not the study's conclusion. Statement 2 is true: DST mentions inconsistencies between fossil evidence and molecular phylogenetic timelines around 51 million years ago. Statement 3 is true because the study points to an East Gondwanan origin around 80 million years ago. Statement 4 is true because DST says India acted as a major centre of early diversification.
Q4Consider 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?
Only statement 3 is correct. Research Matters says the name honours the closest living relative, Syzygium salicifolium. Statements 1 and 2 distort the source: the naming is plant-based, and the described traits include a narrow symmetrical oval-like shape and a net-like vein pattern, not an animal genus or parallel venation.
Q5Consider 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?
Statements 1 and 2 are correct because DST gives 11 fossil leaves from Early Miocene deposits around 20 million years old. Statement 3 is false; Holocene is a distortion of the cited Early Miocene age.
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6Consider the following statements regarding the RAS-relevant conclusions of the BSIP Jamun study: 1. The study points to an East Gondwanan origin of Syzygium around 80 million years ago, with India as a major early diversification centre. 2. The Kasauli fossils used in the study date to about 80 million years ago. 3. The study confirms that the genus first reached India only after spreading from Australia through Southeast Asia. 4. DST links the study to India's role in plant evolution and biodiversity of Asian floras. Which of the statements given above are correct?
7Consider the following statements regarding stratigraphy and chronology in the Jamun study: 1. DST says earlier fossil reports from India ranged from around 60 to 20 million years ago. 2. DST says earlier Paleogene and Neogene fossils were critically re-examined to reconstruct a continuous evolutionary timeline. 3. Research Matters describes the Early Miocene as a period 20 to 5 million years ago. 4. DST assigns the newly discovered Syzygium fossil leaves to Early Miocene deposits of India. Which of the statements given above are correct?
8Consider the following statements about the methods used in the Jamun study: 1. The fossils were analysed using microscopy and detailed morphological characterization. 2. Comparative analysis used herbarium collections and global databases. 3. The taxonomic placement was validated only through ancient DNA extracted from the fossil leaves. Which of the statements given above are correct?
9Consider the following statements regarding the BSIP Jamun study: 1. The study was led by the Birbal Sahni Institute of Palaeosciences, an autonomous institute of the Department of Science and Technology. 2. The fossil specimens used in the study were collected from the Kasauli Formation in Rajasthan. 3. The study concluded that Syzygium originated around 51 million years ago in the Australia-New Guinea region. 4. The identification of the fossils used analysis based on 22 morphological characters. Which of the statements given above are correct?
10Consider the following statements regarding the findings on Syzygium: 1. The study points to an East Gondwanan origin of the genus Syzygium around 80 million years ago. 2. It says India acted as a major centre of early diversification of Syzygium. 3. It confirms that Syzygium first appeared in India only in the Late Pleistocene. Which of the statements given above are correct?
11Consider the following statements about the palaeobotanical details reported on the Jamun fossil discovery: 1. Research Matters describes Syzygium as a genus of flowering trees and plants with over 1,200 species today, including the modern clove plant. 2. The fossil was discovered in the Kasauli Formation in Solan District of Himachal Pradesh. 3. The Early Miocene is described in the report as a period 20 to 5 million years ago. 4. The newly described fossil showed no distinctive leaf-shape or vein-pattern traits. Which of the statements given above are correct?
12Consider the following statements about the publication and significance of the Jamun evolution study: 1. The DST article says the study was published in the Journal of Palaeogeography. 2. The article links plant fossil records with predictions about future climate scenarios. 3. The study concludes that Syzygium dispersed from Australia to India only after the Late Pleistocene. Which of the statements given above are correct?
13Consider the following statements about the Indian fossil record of Syzygium: 1. Earlier fossil reports from India ranged from around 60 to 20 million years ago. 2. A reinvestigation indicates Syzygium was present in the Indian region since the early Eocene, 55 million years ago. 3. The study says Syzygium was absent from the Indian plate until the Late Pleistocene. Which of the statements given above are correct?
14Consider the following statements about the Indian fossil record discussed in the Jamun study: 1. Earlier fossil reports from India ranged from about 60 to 20 million years ago. 2. The reinvestigation showed that Syzygium first appeared in India only in the Late Pleistocene. 3. The genus was already present in the Indian region since the early Eocene, around 55 million years ago. Which of the statements given above are correct?
15Consider the following statements about the Jamun plant and the broader significance of the Syzygium finding: 1. Jamun, or Syzygium cumini, belongs to the Syzygium genus of the Myrtaceae family. 2. Jamun is commonly known as Indian blackberry, black plum or Java plum. 3. The study reverses earlier views by proposing that the genus likely spread from India to Southeast Asia and Australia. 4. The study concluded that the genus spread from Australia to India only after the Industrial Revolution. Which of the statements given above are correct?