Q1. Which of the following organisms is an example of a tertiary consumer?A. GrassB. GoatC. FrogD. Snake
Q2. Which of the following is an example of an abiotic component of an ecosystem?A. PlantsB. AnimalsC. SoilD. Bacteria
Q3. What is the role of decomposers in the ecosystem?A. Fix carbon dioxideB. Recycle nutrients back into the environmentC. Convert inorganic matter into organic compoundsD. Increase primary productivity
Q4. Which of the following is a correct statement about biological magnification?A. Toxins accumulate at lower trophic levelsB. Toxic substances increase in concentration at higher trophic levelsC. It does not affect top predatorsD. It is not influenced by human activities
Q5. What type of pyramid is generally inverted in aquatic ecosystems?A. Pyramid of numberB. Pyramid of biomassC. Pyramid of energyD. Pyramid of productivity
Q6. Which statement about food webs is correct?A. They consist of a single linear pathwayB. They show multiple interconnected food chainsC. They include only producers and consumersD. They do not include decomposers
Q7. Which of the following statements about an inverted pyramid of biomass in an aquatic ecosystem is correct?A. Phytoplankton have a higher biomass than zooplanktonB. Zooplankton have a higher biomass than phytoplanktonC. The biomass of producers is always greater than consumersD. Pyramids of biomass are never inverted
Q8. What is the main function of ecological pyramids?A. To show the interdependence of speciesB. To display the relative number, biomass, or energy at different trophic levelsC. To measure the biodiversity of an ecosystemD. To determine the rate of decomposition
Q9. Which of the following is an example of a man-made ecosystem?A. PondB. ForestC. Crop fieldD. River
Q10. Which of the following statements about ecological pyramids is incorrect?A. Pyramids of energy are always uprightB. Pyramids of biomass in aquatic ecosystems are always uprightC. Pyramids of numbers can be invertedD. Ecological pyramids represent trophic relationships