Top 100 Important Everyday Science Mcqs Set-5 21- Which of the following bone articulations forms the gliding joint? A. CarpalsB. Humerus and radius C. Hip girdle and femur D. Skull & neck vertebrae View Answer Answer : A. Carpals Description 22- Ovulation is prevented by using: A. Copper T B. IUDC. InfanticideD. Pills View Answer Answer : D. Pills Description 23- Colour of the skin is due to the presence of: A. RenninB. MelaninC. MesotosinD. Metatiron View Answer Answer : B. Melanin Description 24- Inspection and dissection of a body after death in human beings, as for determination of cause of death is called: A. Auto graft B. AutonomyC. AutopsyD. Autoesism View Answer Answer : C. Autopsy Description 25- Anticoagulants citrate and oxalates prevent blood clotting by removing: A. Na⁺B. K⁺ C. Ca⁺⁺D. None of these View Answer Answer : C. Ca⁺⁺ Description 26- S-A node of mammalian heart is known as: A. Auto regulator B. Pace-makerC. Time controller D. Beat regulator View Answer Answer : B. Pace-maker Description 27- Which part of the plant conducts photosynthesis? A. RootsB. StemC. FlowersD. Leaves View Answer Answer : D. Leaves Description 28- The hormone responsible for the secretion of milk in mothers is: A. ACTHB. AdrenalinC. LuteinizingD. Lactogenic hormone View Answer Answer : D. Lactogenic hormone Description 29- Lichens are formed due to the symbiotic association of: A. Alga and fungiB. Bacteria and fungi C. Moss and fungi D. None of these View Answer Answer : A. Alga and fungi Description 30- Insects form the largest class of animals living on land and sea. They are grouped into: A. 22 Orders B. 26 OrdersC. 29 Orders D. 32 Orders View Answer Answer : B. 26 Orders Description 31- Which of the following statements is true for plankton? A. They live in the water columnB. They live on the plants growing in water C. They live on bottom of lakes D. They live on the surface of lake water View Answer Answer : A. They live in the water column Description 32- Which of the following is the largest living mammal? A. GiraffeB. White elephant C. RhinocerosD. Blue whale View Answer Answer : D. Blue whale Description 33- Silkworms are fed on: A. InsectsB. Mulberry leavesC. GrassD. None of these View Answer Answer : B. Mulberry leaves Description 34- Yeast is used in making bread because it produces: A. CO₂B. O₂C. SugarD. Bacteria View Answer Answer : A. CO₂ Description 35- Which of the following has the smallest egg? A. OstrichB. Humming bird C. PigeonD. Homo sapiens View Answer Answer : D. Homo sapiens Description 36- The population of which of the following is maximum on the earth? A. BirdsB. BeetlesC. FishesD. Reptiles View Answer Answer : B. Beetles Description 37- Which animal produces the biggest baby? A. ElephantB. Blue whaleC. LionD. Camel View Answer Answer : B. Blue whale Description 38- Poison glands of snakes are homologous to: A. Salivary glands of vertebratesB. Stings of rays C. Sebaceous glands of mammalsD. Electric organs of fishes View Answer Answer : A. Salivary glands of vertebrates Description 39- The phylum chordate is characterized by the presence of: A. NotochordB. Spinal cord C. Nerve chord D. None of these View Answer Answer : A. Notochord Description 40- Which of the following activities is suppressed by the presence of auxins in plants? A. Root initiation B. Cell division C. Growth of lateral budsD. Development of fleshy fruits View Answer Answer : C. Growth of lateral buds Description 1 2 3 4 5
