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Biology Cell Biology Difficulty: Medium

Digestion of starch in mouth takes place by Which of the following experiments suggests that the simplest-living organisms could not have originated spontaneously from non-living matter? Consider the following statements and choose the correct answer: 1. At low temperature, the viscosity of water increases 2. Low temperature retards the growth of the roots 3. At low temperature, viscosity of protoplasm and cell wall decreases 4. Low temperature increases the metabolic activities of the root cells Which of the following is affected by the infection of Wuchereria bancrofti? Consider the following statements and choose the correct answer: 1. Average density of soil is 2.65 gms. per ml. 2. The spaces present between soil particles in a given volume of soil are called pore spaces 3. Porosity of the soil decreases with the increase in the percentage of organic matter in the soil 4. Macro-pore spaces have little water holding capacity and allow free movement of moisture and air in the soil under normal condition