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:

Cinchona

Anopheles

Culex

Quinine

Question 1 of 18

Question 2 of 18

2. 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 take tea before as well as during study

They should not sit for studying

They should not take tea before studying

They should take tea with more milk and sugar

Question 2 of 18

Question 3 of 18

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

Culex

Anopheles

Cinchona

Plasmodium

Question 3 of 18

Question 4 of 18

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

Law

Hypothesis

Theory

Deduction

Question 4 of 18

Question 5 of 18

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

The opposite of hypothesis is tested and proven wrong

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

Question 5 of 18

Question 6 of 18

6. 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?

Constructed a theory

Used observation

Used reasoning

Tested a hypothesis

Question 6 of 18

Question 7 of 18

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

Plasmodium

Culex

Cinchona

Quinine

Question 7 of 18

Question 8 of 18

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

None of these

While taking observations

During hypothesis formulation

During data organization

Question 8 of 18

Question 9 of 18

9. 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

None of these

They should take tea before as well as during study

They should not take tea before study

Question 9 of 18

Question 10 of 18

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

Cinchona

Anopheles

Quinine

Culex

Question 10 of 18

Question 11 of 18

11. The logical consequence of the hypotheses:

Ratio

Induction

Law

Deduction

Question 11 of 18

Question 12 of 18

12. A common species of mosquito; bites mammals:

Culex

Cinchona

Anopheles

Plasmodium

Question 12 of 18

Question 13 of 18

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

Observations, Hypothesis, Law, Theory

Hypothesis, Observations, Deduction, Experimentation

Observations, Hypothesis, Deduction, Experimentation

Law, Theory, Deduction, Observations

Question 13 of 18

Question 14 of 18

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

Biological Statistics

Computational Biology

Bioinformatics

Biological method

Question 14 of 18

Question 15 of 18

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

Measure the amount of sodium in a few bean plant

Analyze root contents for sodium

Grow bean plants with and without sodium

Look for sodium in leaf tissues

Question 15 of 18

Question 16 of 18

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

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

It cannot be rejected

It agrees with available evidence

It has been absolutely proven

Question 16 of 18

Question 17 of 18

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

Must be consistent will all available data

Must make predictions

Must be testable

Must be correct

Question 17 of 18

Question 18 of 18

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

Ensures that hypotheses can be confirmed with certainty

Gives the biologist a correct result

Allows rejection of some alterative hypotheses

Gives scientists a chance to work in the laboratory

Question 18 of 18

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