• Walker Pihl posted an update 2 weeks, 3 days ago

    Question 12. In bony fishes, the swim bladder is used for(A) adjusting the weight of the fish when swimming at different levels.(B) extracting oxygen from water which enters the mouth of the fish.(C) equalizing fluid pressures between the fish and the surrounding water.(D) absorbing more water when the fish is about to descend to a lower levelQuestion 13. The theory that new organs or characteristics develop in organisms when there is a need for themwas postulated by(A) Charles Darwin(B) Wallace(C) Lean Lamarck(D) Gregor MendelQuestion 14. Ribosomes are found in all living cells. What is their function?(A) cellular respiration(B) synthesis of proteins(C) excretion of waste products(D) intracellular transportQuestion 15. Which of the following is NOT a function of the nucleus of a cell?(A) It controls the life processes of the cell(B) It translates genetic information for the manufacture of proteins(C) It stores and carries hereditary information(D) It is a reservoir of energy for the cellQuestion 16. Plants that are adapted to grow in dryland where water content is low are(A) Halophytes(B) Hydrophytes(C) Xerophytes(D) MesophytesQuestion 17. What happens to a man whose pancreas has been surgically removed?(A) the level of blood sugar would increase(B) the glycogen content of the liver would increase(C) his blood pressure would decrease(D) his weight would increase appreciablyQuestion 18. The hereditary factor of the material for inheritance is(A) organ(B) sex(C) gene(D) ovumQuestion 19. The random way genes recombine during meiosis and fertilization leads to(A) genetic variation(B) phenotype(C) genome(D) genotype More past questions available on

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