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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.
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.