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

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Question 1 of 18

Biology

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

Some observation could prove the hypothesis incorrect

The opposite of hypothesis is tested and proven wrong

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

The hypothesis is proven wrong

Question 1 of 18

Question 2 of 18

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

Culex

Anopheles

Cinchona

Quinine

Question 2 of 18

Question 3 of 18

3. 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 observation

Tested a hypothesis

Constructed a theory

Used reasoning

Question 3 of 18

Question 4 of 18

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

Hypothesis, Observations, Deduction, Experimentation

Observations, Hypothesis, Law, Theory

Observations, Hypothesis, Deduction, Experimentation

Law, Theory, Deduction, Observations

Question 4 of 18

Question 5 of 18

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

During data organization

While taking observations

None of these

During hypothesis formulation

Question 5 of 18

Question 6 of 18

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

Law

Hypothesis

Deduction

Theory

Question 6 of 18

Question 7 of 18

7. A common species of mosquito; bites mammals:

Culex

Cinchona

Plasmodium

Anopheles

Question 7 of 18

Question 8 of 18

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

Must be consistent will all available data

Must be testable

Must make predictions

Must be correct

Question 8 of 18

Question 9 of 18

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

It has been absolutely proven

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

It cannot be rejected

It agrees with available evidence

Question 9 of 18

Question 10 of 18

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

Quinine

Cinchona

Plasmodium

Culex

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 the biologist a correct result

Allows rejection of some alterative hypotheses

Gives scientists a chance to work in the laboratory

Ensures that hypotheses can be confirmed with certainty

Question 11 of 18

Question 12 of 18

12. 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 with more milk and sugar

They should not sit for studying

They should take tea before as well as during study

They should not take tea before studying

Question 12 of 18

Question 13 of 18

13. The logical consequence of the hypotheses:

Ratio

Law

Induction

Deduction

Question 13 of 18

Question 14 of 18

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

Cinchona

Quinine

Anopheles

Culex

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?

Analyze root contents for sodium

Measure the amount of sodium in a few bean plant

Look for sodium in leaf tissues

Grow bean plants with and without sodium

Question 15 of 18

Question 16 of 18

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

Anopheles

Plasmodium

Culex

Cinchona

Question 16 of 18

Question 17 of 18

17. 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;

None of these

They should take tea before as well as during study

They should take tea with more milk and sugar

They should not take tea before study

Question 17 of 18

Question 18 of 18

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

Computational Biology

Biological method

Biological Statistics

Bioinformatics

Question 18 of 18

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