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The word 'Denisovan' is sometimes mentioned in media in reference to
Which one of the following statements best describes the role of B cells and T cells in the human body?
Which one of the following is synthesised in human body that dilates blood vessels and increases blood flow ?
The correct answer is option (c): 1 and 3 only. Watch the detailed video explanation in our Sherlocking Prelims course on UnlockIAS.
This question was asked in UPSC CSE Prelims 2020, GS Paper 1, as Question 47. It falls under Science & Technology > Biology.
This question is rated "easy". It tests basic recall and most well-prepared aspirants should answer it correctly.
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.