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UPSC 2009: With reference to the evolution of living organisms, which one of the following sequences is correct?
(a)Octopus – Dolphin – Shark
(b)Pangolin – Tortoise – Hawk
(c)Salamander – Python – Kangaroo
(d)Frog – Crab – Prawn
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Not attemptedCorrect Answer: (c) Salamander – Python – Kangaroo
Amphibians (e.g., salamanders) appeared first in the late Devonian/Carboniferous; reptiles (e.g., pythons) evolved from early amniotes in the Carboniferous–Permian; mammals (e.g., marsupials such as kangaroos) evolved later from reptile-like therapsids in the Triassic–Jurassic. Thus the correct evolutionary sequence is Salamander → Python → Kangaroo. The other sequences put groups in the wrong temporal order. ([britannica.com](https://www.britannica.com/animal/amphibian/Evolution-and-classification?utm_source=openai))
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Frequently Asked Questions
What is the correct answer to this UPSC 2009 Science & Technology question?▼
The correct answer is option (c): Salamander – Python – Kangaroo. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
Which year was this Biology question asked in UPSC Prelims?▼
This question was asked in UPSC CSE Prelims 2009, GS Paper 1, as Question 149. It falls under Science & Technology > Biology.
What is the difficulty level of this UPSC question?▼
This question is rated "moderate". It requires sound conceptual understanding of the topic.
How many UPSC Prelims questions have been asked from Biology?▼
UPSC has asked 97 questions from Biology (under Science & Technology) across multiple years. Visit the topic page to see the full list and year-wise trends.