MCQs Biology-21 Posted on November 28, 2025November 28, 2025Author agropublishers 0 MCQs Biology-21 1. Eructation in ruminants refers to ———- Movement of food to the omasum Release of fermentation gases Absorption of volatile fatty acids Regurgitation of cud 2. The wavelength range that constitutes Photosynthetically Active Radiation (PAR) is______ 200–300 nm 700–900 nm 400–700 nm 300–500 nm 3. The term “canopy” in a forest stand refers to __________ Root system Trunk of trees Forest floor Foliar cover 4. Which of the following environments can serve as a natural habitat for free-living amoebae? Damp terrestrial soil and leaf litter Marine and brackish water sediments All of these Freshwater bodies like lakes and ponds 5. The IUCN Red List categorizes species based on their —————- Evolutionary history Conservation status Geographic range Population size 6. What is soil fauna? Minerals in soil Animals that live in soil Microorganisms in soil Plants that grow in soil 7. Chemical degradation of persistent organic pollutants (POPs) in soil is predominantly influenced by the presence of____________ Redox Conditions Mycorrhizal Fungi Soil Nutrient Status High Oxygen Concentrations 8. Sustainable Development Goals (SDGs) are a set of ________ global goals 10 global goals 12 global goals 17 global goals 15 global goals 9. The earliest archaeologically documented fruit used by humans is the_________ Olive Fig Grape Date palm 10. Protista are diverse group of microrganisms, and are believed as precursors of __________ Bacteria Cyanobacteria Plants Blue-green algae Loading … Question 1 of 10
