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 ______________.

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

Some observation could prove the hypothesis incorrect

The hypothesis is proven wrong

The opposite of hypothesis is tested and proven wrong

Question 1 of 18

Question 2 of 18

2. 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 not take tea before study

They should take tea with more milk and sugar

They should take tea before as well as during study

Question 2 of 18

Question 3 of 18

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

Look for sodium in leaf tissues

Measure the amount of sodium in a few bean plant

Analyze root contents for sodium

Grow bean plants with and without sodium

Question 3 of 18

Question 4 of 18

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

Quinine

Cinchona

Plasmodium

Culex

Question 4 of 18

Question 5 of 18

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

It agrees with available evidence

It cannot be rejected

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

It has been absolutely proven

Question 5 of 18

Question 6 of 18

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

Cinchona

Anopheles

Quinine

Culex

Question 6 of 18

Question 7 of 18

7. 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

Used observation

Constructed a theory

Tested a hypothesis

Question 7 of 18

Question 8 of 18

8. 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 8 of 18

Question 9 of 18

9. A common species of mosquito; bites mammals:

Culex

Plasmodium

Cinchona

Anopheles

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 take tea before studying

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

Question 10 of 18

Question 11 of 18

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

Biological Statistics

Computational Biology

Bioinformatics

Biological method

Question 11 of 18

Question 12 of 18

12. The logical consequence of the hypotheses:

Law

Induction

Ratio

Deduction

Question 12 of 18

Question 13 of 18

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

Observations, Hypothesis, Deduction, Experimentation

Observations, Hypothesis, Law, Theory

Law, Theory, Deduction, Observations

Hypothesis, Observations, Deduction, Experimentation

Question 13 of 18

Question 14 of 18

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

Deduction

Theory

Hypothesis

Law

Question 14 of 18

Question 15 of 18

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

Culex

Anopheles

Cinchona

Plasmodium

Question 15 of 18

Question 16 of 18

16. 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 16 of 18

Question 17 of 18

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

Cinchona

Quinine

Culex

Anopheles

Question 17 of 18

Question 18 of 18

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

None of these

During hypothesis formulation

While taking observations

During data organization

Question 18 of 18

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