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