MCQs Zoology-23 Posted on 2025-11-122025-12-03Author admin 0 Table of Contents Toggle MCQs Zoology-23MCQs Zoology-23 MCQs Zoology-23 1. Genetic load increases when __________ Mutation rate exceeds the selection rate Heterosis occurs Deleterious mutations are efficiently removed Gene flow increases 2. Hybrid vigor (heterosis) results when __________ Mutation rate decreases Homozygous alleles increase Deleterious alleles accumulate Offspring have higher fitness than parents due to heterozygosity 3. Which enzyme is responsible for synthesizing a new strand of DNA during replication? DNA Ligase DNA Polymerase Helicase RNA Polymerase 4. Nitrogenous base _________ is NOT found in DNA Guanine Uracil Adenine Thymine 5. ___________ is the primary function of the enteron Excretion Circulation Respiration Digestion 6. ————— of the following is not a lymphocyte Platelet B cell T cell Monocyte 7. What type of cell organization is characteristic of protists? Prokaryotic None of these Both Prokaryotic & Eukaryotic Eukaryotic 8. Which of the following is NOT a characteristic of metameric segmentation? Presence of a notochord External visibility of segments Repeated internal structures Serial repetition of organs 9. In mitosis, a single parent cell divides to produce ————- Two gametes Two genetically identical daughter cells Four sperm or egg cells Four genetically unique daughter cells 10. Which of the following environments can serve as a natural habitat for free-living amoebae? Freshwater bodies like lakes and ponds Marine and brackish water sediments Damp terrestrial soil and leaf litter All of these Loading … MCQs Zoology-23
