BIOLOGY PAPER 3 (2003-2009)

2003
Q1. To study the effect of camouflage on a predator-prey relationship
[Chapter 8]
Q2. To study the relationship between the concentration of CO₂ and the rate of photosynthesis [Chapter 6]

2004
Q1.To determine the % of vitamin C in fruit juices using DCPIP solution [Chapter 6]
Q2.To estimate the size of the bird population. [Chapter 8]

2005
Q1.To determine and compare the energy content in white bread and peanuts [Chapter 6]
Q2.To determine the concentration of the solution which will maintain the mass of plant tissues.[Chapter 3]

2006
Q1. To study the effect of concentration of albumen suspension on the rate of reaction of pepsin enzyme [Chapter 4]
Q2. To determine concentration of sucrose which is isotonic to cell sap of mango[Chapter 3]

2007
Q1.To study the effect of light intensity on the rate of photosynthesis of a Hydrilla sp. [Chapter 6]
Q2.To study the effect of temperature on the rate of anaerobic respiration in yeast [Chapter 7]

2008
Q1.To investigate the effect of light intensity on the population distribution of Pleurococcus sp. [Chapter 8]
Q2.To study the size of molecules that can diffuse through a semi permeable membrane [Chapter 3]

2009
Q1.To study the effect of light intensity on the rate of photosynthesis. [Chapter 6]
Q2.To study the effect of temperature on the rate of enzyme reaction. [Chapter 4]

2010
Q1. To investigate the effect of different duration of activity on the percentage of carbon dioxide in exhaled air.[Chapter 7]
Q2. To study the effect of interspecific competition between maize and paddy plants on their growth.[Chapter 8]