9th Biology Chapter2 Solving a biological problem
| Sr # | Questions | A | B | C | D |
|---|---|---|---|---|---|
| 1 | Ross found mosquitoes multiplying in | Salivary gland | Blood | Stomach | Both 1 & 3 | 2 | A theory is supported by a great deal of: | Result | Observation | Evidence | Experiment | 3 | In which century America was discovered? | 16 | 17 | 18 | 19 | 4 | Mosquito that transmits dengue fever: | Anopheles | Culex | Aedes | Female anopheles mosquito | 5 | Which disease has killed more people than any other disease? | AIDS | Cancer | Typhoid | Malaria | 6 | Most basic step of biological method? | experimentation | obserbvation | hypothesis | deductions | 7 | Proportion is expressed by putting a sign: | = | : : | both 1 & 2 | : | 8 | Summarizing data through the calculation of a mean value: | Physics | Economics | Mathematics | Statistics | 9 | Blood clotting in food canal of mosquito is prevented by: | Saliva | Lymph | Platelets | All of these | 10 | 11 | The hypothesis that stands the test of time are called: | Observations | Theories | Deductions | Experiments | 12 | Plasmodium is transferred by: | Virus | Fly | Bacteria | Mosquito |