Saturday, April 13, 2024

9th Class Biology Solved MCQs Chapter 2 ” Solving a biological Problem”

9th class Biology MCQs & Short Questions

Chapter No: 2
               “Solving a Biological Problem”

1. The scientific method in which biological problems are solved is called……..
a) Experimental method
b) Biological method
c) Hypothesis
d) None of the above
            Sol: (b) Biological method.
2. The freezing point of water is…………
a) 100℃
b) 98℃
c) 0℃
d) 105℃
            Sol: (c) 0℃
3. A liter of water is heavier than a liter of…………
a) Sodium
b) Calcium
c) Magnesium
d) Ethanol
             Sol: (d) Ethanol.
4. A liter of ethanol weighs ………
a) 789 grams
b) 786 kg
c) 789 ml
d) 789 mg
             Sol: (a) 789 grams.
5. The tentative explanation of observations is called………..
a) Hypothesis
b) Deductions
c) Observation
d) Results
               Sol: (a) Hypothesis.
6. Biologists used reasoning to formulate a……………
a) Results
b) Experiments
c) Theory
d) Hypothesis
             Sol: (d) Hypothesis.
7. The most basic step of the biological method is………..
a) Observations
b) Hypothesis
c) Summarization of results
d) Experimentation
             Sol: (d) Experimentation.
8. The Italian word “mala” means
a) Bad
b) Air
c) Bad air
d) Both (a) & (b)
              Sol: (a) Bad.
9. Which scientist gave the name plasmodium?
a) Dr. Alphonse Laveran
b) A.F.A. King
c) Ronald Ross
d) Aristotle
             Sol: (a) Dr. Alphonse Laveran.
10. Which one of the following is a correct smartgrid today sequence in the biological method?
a) Observation, Deduction, Hypothesis, Law
b) Observation, Hypothesis, Deduction, Experimentation
c) Observation, Theory, Law, Hypothesis
d) Hypothesis, Deduction, Theory, Reporting
            Sol: (b) Observation, Hypothesis, Deduction, Experimentation.
11. Who confirmed that plasmodium is transferred to man by a mosquito?
a) Ronald Ross
b) A.F.A King
c) Laveran
d) All of the above
              Sol: (a) Ronald Ross.

12. Ross used …………for their experiments?
a) Sparrows
b) Mosquito
c) Rat
d) All of the above
              Sol: (a) Sparrows.
13. In sparrows, Plasmodium spreads through……
a) Aedes mosquito
b) Culex
c) Anopheles
d) Both (b) & (c)
               Sol: (b) Culex.
14. Which one of these is NOT a characteristic of a hypothesis?
a) Must be testable
b) Must make predictions
c) Must be correct
d) Must be consistent with all available data
               Sol: (c) Must be correct.
15. A gardener sees a large snake nearby. He knows that generally snakes sting, so the gardener ran away. The gardened which of the following?
a) Used observation
b) Used reasoning
c) Conducted a theory
d) Tested a hypothesis
               Sol: (b) Used reasoning.
16. The bark of ……………a tree was a cure for malaria.
a) Deodar
b) Cinchona
c) Aloe Vera
d) Tulsi
               Sol: (b) Cinchona.
17. In man plasmodium multiplies in the……………
a) Blood
b) Skin
c) Kidney
d) Wall of stomach
              Sol: (a) Blood.
18. At which point is a biologist most likely to use reasoning?
a) While taking observation
b) During hypothesis formulation
c) During data organization
d) None of the above
              Sol: (b) During hypothesis formulation.
19. Quantitative observations are considered more accurate than qualitative ones because quantitative ones are …………
a) Invariable
b) Measurable
c) Recorded in terms of numbers
d) All of the above
              Sol: (d) All of the above.
20. The hypothesis which is often tested and never rejected is called ……..
a) Data
b) Theories
c) Deductions
d) Laws
              Sol: (b) Theories.
21. A scientific law is a uniform or constant fact of…………
a) Nature
b) Universe
c) Space
d) None of the above
              Sol: (a) Nature.
22. Scientific law is irrefutable…………
a) Law
b) Principle
c) Theory
d) All of the above
               Sol: (c) Theory.
23. The information such as names dates or values made from observations and experiments are called………..
a) Data analysis
b) Data
c) Principle
d) Productive theory
                Sol: (b) Data.
24. Data is organized in different formats like………
a) Maps
b) Flow charts
c) Tables
d) All of the above
                Sol: (d) All of the above.
25. The examples of biological laws are……….
a) Newton’s law of motion
b) Hardy-Weinberg law and Mendel’s law
c) Dalton’s law
d) All of the above
               Sol: (b) Hardy-Weinberg law and Mendel’s law.
26. A scientific theory has which of the following properties?
a) It agrees with available evidence
b) It has been absolutely proven
c) It cannot be rejected
d) It does not need to be altered in the light of new evidence
               Sol: (b) It has been absolutely proven.
27. Major biological problems in which knowledge of mathematics is used………
a) Gene finding
b) Protein structure
c) Protein-protein interactions
d) All of the above
               Sol: (d) All of the above.
28. The computational and statistical technique for the analysis of biological data is called…….
a) Productive theory
b) Bioinformatics
c) Data analysis
d) All of the above
              Sol: (b) Bioinformatics.

Stay tuned with Being for more biology-related topics and other classes MCQs and important questions.

Important definitions in the 2nd chapter of Biology 9th class:
1. Define the biological method?
2. Define the hypothesis?
3. Define theory?
4. Define productive theory?
5. Define data?
6. Define bioinformatics?

Frequently asked questions in previous board and school tests.
1. What are the steps biologists take to solve biological problems?
2. Difference between quantitative and qualitative observations?
3. Quantitative observation is considered more accurate than qualitative observation, why?
4. What are the characteristics of the hypothesis?
5. What is “control” in the experiment?  (Very Important)
6. Write the important observations of A.F.A. King?
7. Difference between theory and law?
8. Why did Ronald Ross use sparrows in his experiment?

(Work hard, Stay humble, and always help each other),

Class 9th biology chapter 2 mcqs, solving a biological problem,

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Muhammad LuQman Ashraf
Being Ghazali is a Biology, Nature, birds, and all about planets blog covering important CSS news and zoology-related posts. We plan to cover all biology topics and the latest information about zoology. Founded by "Muhammad LuQman Ashraf" with the Grace Of "Allah Almighty". We aim to discover new things, in the future and write all about Wildlife Sanctuary and National Parks in the world.

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