1) Longest bone of human body a) stapes b) femur c) tibia d) fibula 2) largest gland of human body a) liver b) heart c) kidney d) stomach 3) types of teeth in human body a) 6 b) 32 c) 4 d) 5 4) life cycle of red blood cell a) 2 months b) 3months c) 4 months d) 5 months

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