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