9th class Biology Chapter no.2 MCQs
Unit no.2 MCQs of 9th Class Biology
Solving a Biological Problem:
1. At which point is a biological most likely to use reasoning?
a. During data organization
b. While taking observation
c. None of these
d. During hypothesis formulation
2. Which one of the characteristics is not in a good hypothesis?
a. Must be correct
b. Must be testable
c. Must be consistent with available data
d. Must move prediction
3. “It should be a general statement” belongs to:
a. Hypothesis
b. Experiment
c. Deduction
d. Theory
4. “Plasmodium is the cause of malaria.” This statement is a:
a. Theory
b. Hypothesis
c. Law
d. Deduction
5. The tentative explanation of the observations is called:
a. Deduction
b. Problem
c. Result
d. Hypothesis
6. The logical consequences of a hypothesis are called:
a. Biological problem
b. Deductions
c. Theory
d. Observations
7. The biological method has played an important role in scientific research for almost:
a. 275 years
b. 350 years
c. 725 years
d. 500 years
8. No. of steps of biological method are:
a. Six
b. Four
c. Seven
d. Five
9. The first step to solve biological problem is:
a. Observation
b. Experiment
c. Deduction
d. Hypothesis formation
10. The most basic step of biological method is:
a. Deduction
b. Experimentation
c. Hypothesis
d. observation
11. To test the hypothesis biologists perform:
a. Observations
b. Experiments
c. Hypothesis
d. Deduction
12. “Freezing point of water is less than its boiling point.” Which type observation is it?
a. Competitive
b. Qualitative
c. Non competitive
d. Quantitative
13. Plasmodium causes to spread the disease:
a. Polio
b. Yellow fever
c. Malaria
d. T.B
14. Meaning of “aria” is:
a. Odour
b. Air
c. Smell
d. Smoke
15. Quinine was the only effective remedy for malaria from the:
a. 19th to the 20th century
b. 15th to the 17th century
c. 16th to the 19th century
d. 17th to the 20th century
16. Quinine is obtained from the bark of:
a. Cinchona tree
b. Quinaquina tree
c. Pinus tree
d. Thuja tree
17. A chemical found in the bark of cinchona plant is:
a. Quinine
b. Aspirine
c. Morphane
d. Tetracycline
18. Who suggested that mosquitoes are involved in the transmission of malaria?
a. A.F.A. king
b. Laveran
c. None of these
d. Ronald ross
19. The army physician who observed at malaria in 1878:
a. A.F.A. king
b. Ronald ross
c. Laveran
d. Mendel
20 Malaria is caused by:
a. Virus
b. Bacteria
c. Mosquito
d. Plasmodium
21. A doctor A.F.A. king made 20 observations on malaria in:
a. 1829 AD
b. 1883 AD
c. 1825 AD
d. 1985 AD
22. Which scientist firstly observed microorganisms in the blood of a malarial patient?
a. A.F.A king
b. Ronald ross
c. Robert Hooke
d. Laveran
23. Scientists who performed experiments of malaria on sparrow:
a. Laveran
b. Ronald ross
c. Bu Ali Sina
d. A.F.A. king
24. Malaria is spread in sparrow by mosquito:
a. Dengue
b. Culex
c. Aphids
d. Anopheles
25. In human beings’ malaria is transmitted by:
a. Culex mosquito
b. Marshy areas
c. Any mosquito
d. Anopheles mosquito
26. In sparrows malaria is spread by:
a. Marshy areas
b. Culex mosquito
c. Any mosquito
d. Anopheles mosquito
27. Only female mosquitoes bite humans and sparrow to cause malaria because:
a. Plasmodium can survive only in female mosquitoes
b. They need blood of mammals and birds for maturation of their eggs
c. Male mosquitoes can not bite
d. All of these
28. The female mosquitoes need……… to grow their eggs:
a. The blood of mammals
b. The blood of birds
c. Both
d. None of these
29. The growth of plasmodium in human body takes place in:
a. Liver
b. Stomach
c. Kidneys
d. Small intestine
30. Dengue fever is spread by:
a. Anopheles mosquito
b. Culex mosquito
c. Female anopheles mosquito
d. Aedes mosquito
32. Sense organs are ……… in number:
a. Seven
b. Five
c. Eight
d. Six
33. The hypothesis, which are often tested and never rejected become:
a. Theories
b. Laws
c. Results
d. Principles
34. The senses used by biologist for observation are:
a. Four
b. Two
c. Five
d. Three
35. Biologists use discussion and reasoning procedure to formulate a:
a. Theory
b. Hypothesis
c. Data
d. Law
36. Proportion means to join two equal ratio by the sign of:
a. Addition
b. Equality
c. Subtraction
d. Division
37. A scientific law of principle is an irrefutable:
a. Experiment
b. Hypothesis
c. Theory
d. Deduction
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