Punjab 9th Class Biology Chapter 2 Solving a Biological Problem 9th Class Punjab

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Question 1 of 18

Biology

1. The medicines that kills plasmodium and so cures malaria:

Quinine

Anopheles

Culex

Cinchona

Question 1 of 18

Question 2 of 18

2. A tree, the bark of which was used for the treatment of fevers:

Quinine

Anopheles

Cinchona

Culex

Question 2 of 18

Question 3 of 18

3. The tentative statement that may prove to be the answer of a scientific problem:

Hypothesis

Deduction

Law

Theory

Question 3 of 18

Question 4 of 18

4. A gardener sees a large snake nearby. He knows that generally snakes sting, so the gardener ran away. The gardener did which of the following?

Used reasoning

Constructed a theory

Tested a hypothesis

Used observation

Question 4 of 18

Question 5 of 18

5. A species of mosquito; bites birds is called:

Plasmodium

Quinine

Culex

Cinchona

Question 5 of 18

Question 6 of 18

6. You are testing a hypothesis; “students learn more if they drink tea before sitting for study”. Your 20 experimental students drink tea before study; you test their learning by giving questions. Your 20 students of the control group should have all experimental conditions identical to the experimental group EXCEPT that;

They should take tea with more milk and sugar

They should not take tea before study

None of these

They should take tea before as well as during study

Question 6 of 18

Question 7 of 18

7. At which point is a biologist most likely to use reasoning?

While taking observations

During data organization

None of these

During hypothesis formulation

Question 7 of 18

Question 8 of 18

8. A scientific theory has which of the following properties?

It has been absolutely proven

It agrees with available evidence

It does not need to be altered in the light of new evidence

It cannot be rejected

Question 8 of 18

Question 9 of 18

9. Unicellular organism that causes malaria in mammals and birds etc.

Cinchona

Anopheles

Plasmodium

Culex

Question 9 of 18

Question 10 of 18

10. You are testing a hypothesis; “students learn more if a They drink tea before sitting for study”. Your 20 experimental students drink tea before study; you test their learning by giving questions. Your 20 students of the control group should have all experimental conditions identical to the experimental group EXCEPT that;

They should not sit for studying

They should take tea with more milk and sugar

They should take tea before as well as during study

They should not take tea before studying

Question 10 of 18

Question 11 of 18

11. Experimentation is only a step of the scientific process, but it is a very import because it always _________.

Gives scientists a chance to work in the laboratory

Ensures that hypotheses can be confirmed with certainty

Gives the biologist a correct result

Allows rejection of some alterative hypotheses

Question 11 of 18

Question 12 of 18

12. A hypothesis must be testable to be scientifically valid. Being testable means that ______________.

Some observation could prove the hypothesis incorrect

Only a controlled experiment can indicate whether the hypothesis is correct or incorrect

The hypothesis is proven wrong

The opposite of hypothesis is tested and proven wrong

Question 12 of 18

Question 13 of 18

13. The logical consequence of the hypotheses:

Law

Ratio

Induction

Deduction

Question 13 of 18

Question 14 of 18

14. Which one of the following is a correct sequence in biological method?

Law, Theory, Deduction, Observations

Observations, Hypothesis, Deduction, Experimentation

Observations, Hypothesis, Law, Theory

Hypothesis, Observations, Deduction, Experimentation

Question 14 of 18

Question 15 of 18

15. A common species of mosquito; bites mammals:

Plasmodium

Culex

Cinchona

Anopheles

Question 15 of 18

Question 16 of 18

16. Which one of these is NOT a characteristic of a hypothesis?

Must make predictions

Must be correct

Must be testable

Must be consistent will all available data

Question 16 of 18

Question 17 of 18

17. The use of algorithms, computational and statistical techniques for the analysis of biological data.

Biological method

Biological Statistics

Computational Biology

Bioinformatics

Question 17 of 18

Question 18 of 18

18. What would be the best experiment design for testing a hypothesis that bean plants require sodium?

Look for sodium in leaf tissues

Grow bean plants with and without sodium

Measure the amount of sodium in a few bean plant

Analyze root contents for sodium

Question 18 of 18

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