9th Biology Chapter2 Solving a biological problem
| Sr # | Questions | A | B | C | D |
|---|---|---|---|---|---|
| 1 | Summarizing data through the calculation of a mean value: | Physics | Economics | Mathematics | Statistics | 2 | Malaria fever spread due to: | Amoeba | Plasmodium | Paramecium | Virus | 3 | Mosquito that transmits dengue fever: | Anopheles | Culex | Aedes | Female anopheles mosquito | 4 | Which disease has killed more people than any other disease? | AIDS | Cancer | Typhoid | Malaria | 5 | Proportion is expressed by putting a sign: | = | : : | both 1 & 2 | : | 6 | 7 | Blood clotting in food canal of mosquito is prevented by: | Saliva | Lymph | Platelets | All of these | 8 | Tentative explanation of observations is: | Theory | Deduction | Hypothesis | Result | 9 | An irrefutable theory: | Hypothesis | Law | Deduction | All of these | 10 | Quinine is obtained from: | Cinchona bark | Quina-Quina bark | Both 1 & 2 | None of these | 11 | Malaria spread in birds by: | Aedes | Culex | Dengue | Anopheles | 12 | Most basic step of biological method? | experimentation | obserbvation | hypothesis | deductions |