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9th Biology Chapter2 Solving a biological problem

Sr #QuestionsABCD
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