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