SCIENCE - WRITTEN WORK NO. 3Multiple Choice. Write the letter of the correct answer on a separate sheet of paper.1. What is the advantage of having a high biodiversity?C. helps to maintain the food web circleD. increases the vulnerability of ecosystem to disastersC. foodA. decreases livelihoodB. increases contact with diseases2. Which of the following can high biodiversity provide?A. shelterB. water3. What causes low biodiversity?A. pollutionB. habitat destructionC. over-exploitation4. Which of the following is the most effective way to protect biodiversity?A. habitat fragmentationC. habitat destructionB. habitat preservation6. A diagram of a food web is shown on the right. Which organismreceives the least amount of energy from the producers?B. mouseC. hawkD. conservation strategies5. This illustrates the transfer of energy from the green plants to a series of organisms.A. sunB. food webC. food chainA. rabbitD. grasshopper7. What is the ultimate source of energy of producers?A. sunB. food web C. food chain D. decomposer8. Which of the following can be considered abiotic?A. humansB. planktonC. dissolved oxygenD. nitrogen fixing bacteria9. The following are products of respiration process EXCEPTB. ATPD. oxygenA. CO2C. water10. Which of the following is TRUE about the role of organisms inbiogeochemical cycles?A. Materials follow a cyclic path in the ecosystem.LizardGrasshopperD. all of theseA. producersB. consumersC. decomposers12. The conversion of nitrogen from the soil into nitrogen gas is calledA. nitrogen fixation B. denitrification14. How do humans facilitate the cycle of carbon in the atmosphere?A. by planting treesB. by burning fossil fuelsD. all of theseC. decomposition13. Which of the following compound is readily available in the atmosphere?B. NH3A. NO3C. NOD. decomposerHawkRabbitGrassB. The end part of every food chain is decomposers.C. Primary consumers take more energy than Secondary consumersD. Biotic factors bring back the essential materials to the environment through respiration ordecomposition.11. In a food chain, which is most likely able to bring back the nutrients/materials to its reservoir inthe environment?D. all of theseSnakeMouseD. respirationD. N2C. by using organic fertilizersD. by throwing garbage into bodies of water15. The process in which water moves between places and changes from one form to another isknown as theA. carbon cycle B. hydrologic cycleC. nitrogen cycleD. oxygen cycle

1. What is the advantage of having a high biodiversity? Ans) C. Helps to maintain the foodweb circle…

SCIENCE - WRITTEN WORK NO. 3 Multiple Choice. Write the letter of the correct answer on a separate sheet of paper. 1. What is the advantage of having a high biodiversity? C. helps to maintain the food web circle D. increases the vulnerability of ecosystem to disasters C. food D. all of these A. pollution B. habitat destruction C. over-exploitation 4. Which of the following is the most effective way to protect biodiversity? A. habitat fragmentation C. habitat destruction B. habitat preservation A. decreases livelihood B. increases contact with diseases 2. Which of the following can high biodiversity provide? A. shelter B. water 3. What causes low biodiversity? D. conservation strategies 5. This illustrates the transfer of energy from the green plants to a series of organisms. A. sun B. food web C. food chain 6. A diagram of a food web is shown on the right. Which organism receives the least amount of energy from the producers? B. mouse C. hawk A. rabbit D. grasshopper 7. What is the ultimate source of energy of producers? B. food web C. food chain D. decomposer A. sun 8. Which of the following can be considered abiotic? A. humans B. plankton Lizard D. all of these C. dissolved oxygen D. nitrogen fixing bacteria 9. The following are products of respiration process EXCEPT C. water D. oxygen A. CO₂ B. ATP 10. Which of the following is TRUE about the role of organisms in biogeochemical cycles? A. Materials follow a cyclic path in the ecosystem. B. The end part of every food chain is decomposers. C. Primary consumers take more energy than Secondary consumers D. Biotic factors bring back the essential materials to the environment through respiration or Grasshopper 14. How do humans facilitate the cycle of carbon in the atmosphere? A. by planting trees B. by burning fossil fuels A. producers B. consumers C. decomposers gas is called 12. The conversion of nitrogen from the soil into nitro A. nitrogen fixation B. denitrification C. decomposition 13. Which of the following compound is readily available in the atmosphere? B. NH3 A. NO3 C. NO D. decomposer Hawk Rabbit WW Grass decomposition. 11. In a food chain, which is most likely able to bring back the nutrients/materials to its reservoir in the environment? Snake D. all of these D. respiration D. N₂ Mouse C. by using organic fertilizers D. by throwing garbage into bodies of water 15. The process in which water moves between places and changes from one form to another is known as the A. carbon cycle B. hydrologic cycle C. nitrogen cycle D. oxygen cycle