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