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Biology Form 2 Question Paper

Biology Form 2

Course:Secondary Level

Exam Year:2010

Instructions:Answer all the questions. 1.State three properties of cell membrane to its functions.(3mks) 2.Explain why a red blood cell bursts when put in distilled water but an onion cell doesn't burst.(2mks) 3.Why are the xylem vessels more efficient in transportation of water than tracheids.(2mks) 4.State three forces involved in transportation of water and mineral salts.(3mks) 5.Explain why carboxyhaemoglobin leads to death.(2mks) 6.What role is played by the following nerves in mammalian heart? i)Vagus ii)Symphathetic.(2mks) 7.Explain why blood group O person is a universal donor while blood group AB is a universal recipient.(4mks) 8.Differentiate the term myogenic from nerogenic muscles as used in mammalian heart.(2mks) 9.Explain what happens to glucose formed by photosynthesis in a dicotyledaneous leaf.(2mks) 10.State two ways in which a leaf is adopted to gaseous exchange.(2mks) 11.Where do the following processes take place in a plant, i)Light stage in photosynthesis. ii)Dark stage in photosynthesis.(2mks) 12.State three factors which affects the rate of photosynthesis.(3mks)

Biology Form 2 Question Paper

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