Nutrient Cycling MCQs (Quiz 1) Posted on May 29, 2026Author agropublishers 0 1. In an ecosystem, detritus refers to ____________ Dissolved minerals in water Dead organic matter and biological waste Living microbial biomass Soil nitrogenous mass 2. _______________ of the following is an example of an abiotic component in an ecosystem Deer Trees Sunlight Fungi 3. Mineralization is the process of ____________ Removing nutrients from ecosystems Converting minerals into organic matter Converting organic nutrients into inorganic forms Fixing atmospheric nitrogen 4. In an ecosystem consumers obtain nutrients by _________ Chemosynthesis Nitrogen fixation Photosynthesis Feeding on other organisms 5. A biogeochemical cycle involves the interaction of ________________ Biological and physiological factors Geological and physiological processes Chemical and physiological reactions Biological, geological, and chemical processes 6. . __________________________ termed as a nutrient A non-essential environmental component A decomposed organic residue A chemical substance required for growth and survival of organisms A source of sunlight for producers 7. Among the living organisms decomposers are generally from _____________and ______________ Bacteria and fungi Grasshoppers and rabbits Lions and wolves Trees and shrubs 8. ______________________ is called nutrient cycling The transfer of energy between trophic levels in a food web The one-way movement of nutrients from soil to plants only The continuous movement and recycling of nutrients between living organisms and the environment The permanent storage of minerals in rocks and geological formations 9. An ecosystem consists of all _____________ Microorganisms and soil Abiotic components Plants and animals Living organisms and their physical environment interacting together 10. Which nutrient cycle is strongly linked with nucleic acid synthesis? Carbon cycle Sulfur cycle Oxygen cycle Phosphorus cycle Loading … Question 1 of 10
