MCQs Biology-25 Posted on December 2, 2025December 2, 2025Author agropublishers 0 MCQs Biology-25 1. Rubisco catalyzes a crucial step of which reaction? NADP⁺ reduction CO₂ reduction ATP synthesis CO₂ fixation 2. The Warburg effect describes ___________ Reduced photosynthesis with high O₂ Enhanced chlorophyll synthesis Reduced photosynthesis with high CO₂ Increased respiration at night 3. Which pigment absorbs blue and red light most strongly? Xanthophyll Carotene Chlorophyll b Chlorophyll a 4. In humans, the organ that produces insulin is the ______ Spleen Pancreas Liver Thyroid 5. Photorespiration increases when ___________ CO₂ is high Light is low O₂ is low Temperature is high 6. The Latin name humans, ie., Homo sapiens consists of which taxonomic ranks? Genus & Species Genus & Family Genus & Class Family & Order 7. The movement of water molecules from a region of high concentration to an area of low concentration across a semipermeable membrane is called _______ Active transport Diffusion Filtration Osmosis 8. The key product of light reactions include ________ Acetyl-CoA ATP and NADPH Pyruvate Glucose 9. Integrated Farming System primarily aims to Optimize resource utilization and sustainability Increase use of chemical fertilizers Promote monocropping Maximize livestock population 10. Which of the following is an acellular organism that completely lacks a nucleus and other organelles? Chlamydomonas Tobacco Mosaic Virus Escherichia coli Saccharomyces cerevisiae Loading … Question 1 of 10
