SECTION A-Multiple Choice Answer Questions (30 marks) 1. Which of the following is NOT a cause of the loss of Biodiversity? A. Decreasing appetite for food B. Growing appetite for food C. Forests and grasslands are cleared for urban development D. Pollution degrades natural habitats. E. Massive exploitation of species for their commercial value 2. Which of the following will be used in secondary oil recovery? A. Conventional pump B. Salt water C. Fresh water D. Carbon dioxide gas E. Oil 3. Which of the following sentences about matter is CORRECT? 1. Oxygen gas does not occupy space and is not a matter. II. Compounds like sugar are matter. III. Matter includes solid, liquid and gas. A. II only B. III only C. I and II D. II and III E. I, II and III 4. Which of the following statement is INCORRECT? A. Renewable energy means the energy source is replaceable in natural recycling processes. B. Photovoltaic cell is for generation of electricity from sunlight. C. Geothermal energy is a type of renewable energy. D. Solar power is a type of fuel derived from present-day photosynthesis. E. Grass is the source to produce second generation bio-ethanol. 5. Which of the following is the CORRECT sequence of levels of organization in living things? A. Atom+ Cell Organ Organism - Population B. Organism Organ Population Community Biosphere C. Atom Cell - Organ + Biosphere Population D. Molecule Cell Organism Community Population E. Organ Atom Organism Biosphere Community 6. Which of the following statement is INCORRECT? A. Organic nitrogen, e.g. protein, can be decomposed by bacteria. B. Chemical nitrogen fixation results in the formation of fertilizer - a form of reactive nitrogen that can be uptake by plants. C. Atmospheric dinitrogen gas is not biologically available to green plants. D. Reactive nitrogen can be uptake by plants and nitrate ion is an example of it. E. Biological Nitrogen fixation is carried out by denitrifying bacteria. 7. Which of the following options are services of ecosystem? A. B. D. E. CMUA 8. Fresh air Fresh water Local climate regulation Breakdown of dead leaves by bacteria Both C and D. Which of the following statements is CORRECT? A. Green plants perform photosynthesis at daytime and respiration at nighttime only. B. Only green plants can perform photosynthesis. C. Consumers, e.g. cow, can only perform both photosynthesis and respiration. D. Respiration is an energy requiring process. E. Photosynthesis is an energy releasing process. 9. Which of the following options are classified as biofuels? 1. Bioethanol II. Biogas III. Methane IV. Natural gas V. Biodiesel A. I and II B. III and IV C. I, II and V D. III, IV and V E. I, II, III and V 10. Which of the following is/are CORRECT description about fractional distillation of petroleum? 1. Small hydrocarbons are separated from large hydrocarbons according to their boiling points. II. Crude oil is heated III. Refinery Gas is produced during the process of distillation. IV. Gasoline can be obtained. A. I and II B. II and III C. III and IV D. I, II and III E. All of the above End of Section A
