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