Q1. Which ecological pyramid is always upright?A. Pyramid of numberB. Pyramid of biomassC. Pyramid of energyD. Pyramid of productivity
Q2. Which of the following statements about primary productivity is incorrect?A. Primary productivity is the rate at which biomass is producedB. Net primary productivity (NPP) is greater than gross primary productivity (GPP)C. GPP includes total energy fixed by plantsD. Primary productivity is influenced by environmental factors
Q3. Which of the following describes the process of humification?A. Breaking down detritus into smaller particlesB. Accumulation of organic matter in soilC. Conversion of organic matter into inorganic nutrientsD. Loss of nutrients from soil
Q4. Which of the following trophic levels has the highest amount of energy?A. ProducersB. Primary consumersC. Secondary consumersD. Tertiary consumers
Q5. Which of the following organisms is a primary consumer in an aquatic food chain?A. ZooplanktonB. PhytoplanktonC. FishD. Shark
Q6. Which of the following statements about food chains is incorrect?A. A food chain represents a single pathway of energy flowB. Food chains always include decomposersC. Food chains begin with producersD. Consumers rely on other organisms for food
Q7. What is the primary function of detritivores in an ecosystem?A. Breaking down dead organic matterB. Fixing carbon dioxideC. Storing energy in biomassD. Converting solar energy into chemical energy
Q8. Which of the following statements about the water cycle is incorrect?A. Transpiration contributes to the water cycleB. Water is constantly cycled between different reservoirsC. Water is permanently lost from ecosystemsD. Precipitation returns water to the Earth's surface
Q9. Which law explains the loss of energy at each trophic level?A. Law of conservation of massB. First law of thermodynamicsC. Second law of thermodynamicsD. Law of limiting factors
Q10. Which factor primarily controls the rate of decomposition in an ecosystem?A. Amount of sunlightB. Soil moisture and temperatureC. Population of herbivoresD. Wind speed