Biology - Single MCQs (Page 31)

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Q301. Approximately how many times each day do our heart valves open and close normall...Q302. Normal blood pressure of man is...Q303. Sugarcane plants are usually propagated by vegetative means because...Q304. The pigment involved in photosynthetic activity is...Q305. Free-living nitrogen fixing microorganisms are...Q306. Vegetable oils are converted into solid fat (ghee) by...Q307. A drug which helps in controlling fever is...Q308. Identify the correct statement with respect to Biogas....Q309. Aspartame is the name of a product used by diabetic patients as a sweetening age...Q310. Which one of the following four secretions is different from the remaining three...