Biology For Class IX - Chapter No.2 - Solving A Biological Problem - MCQs and Fill In the Blanks

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CHAPTER 2
SOLVING A BIOLOGICAL PROBLEM
Multiple Choice Questions

1. Encircle the correct answer:
(i) Select the correct sequence of biological method:
(a) Law → Theory → Reasoning → Hypothesis
(b) Hypothesis → Theory → Law → Reasoning
(c) Hypothesis → Reasoning → Theory → Law
(d) Law → Hypothesis → Reasoning → Theory

(ii) Select the odd one
(a) Theory
(b) Law
(c) Hypothesis
(d) Ratio

(iii) Field of research that examines mathematical representations of biological system called ________.
(a) Ratio
(b) Mathematical biology
(c) Proportion
(d) Law

(iv) Biological method involves all of the following except:
(a) Data collection
(b) Observation
(c) Experiment
(d) Proportion

(v) Scientific reasoning moves from specific to general:
(a) Inductive
(b) Deductive
(c) Observation
(d) Both a and b

(vi) Quantitative observation is the use of
(a) Senses
(b) Equipment
(c) Guess
(d) Ratio

(vii) Equation stating that two ratios are equal
(a) Ratio
(b) Proportion
(c) Guess
(d) Senses

(viii) The comparison of two values is called _______.
(a) Ratio
(b) Proportion
(c) Graph
(d) Table

(ix) What is a hypothesis?
(a) The same thing as an unproven theory.
(b) A tentative explanation that can be tested and is falsified.
(c) A verifiable observation.
(d) A fact based on quantitative data that is falsified.

(x) In data organization, which method is mostly useful?
(a) Table
(b) Graph
(c) Ratio
(d) Both a and b

11. Science is the systematic study of:
a) animals
b) plants
c) nature
d) planets

12. At the core of biology and other sciences a problem solving approach called:
a) scientific approach
b) scientific method
c) scientific Process
d) scientific experiment

13. It is a set of questions to be solved. about the natural world:
a) Biological method
b) Biological problem
c) Hypothesis
d) Reasoning

14. Female Anopheles mosquito spreads the disease of:
a) dengue
b) chikungunya
c) typhoid
d) malaria

15. The solution of biological problem starts with:
a) observation
b) hypothesis
c) reasoning
d) experiment

16. An observation that gained through the senses is called:
a) quantitative
b) qualitative
c) hypothesis
d) Both a and b

17. The name, plasmodium, was given to the tiny creature present in the blood of malaria patient by:
a) Laveran
b) Ronald Ross
c) Galileo
d) King

18. It can he defined as "the intelligent guess made by a scientist in the form of statement”:
a) Observation
b) Reasoning
c) Hypothesis
d) Law

19. Scientific reasoning moves from general to specific:
a) Inductive
b) Deductive
c) Observation
d) Both a and b

20. It is well-tested and highly reliable scientific explanation of a natural phenomenon:
a) Hypothesis
b) Observation
c) Scientific method
d) Scientific theory

21. They unify many repeated observations and data collected from lots of experiments:
a) Theory
b) Hypothesis
c) principle
d) Law

22. It is a uniform or constant fact of nature:
a) Theory
b) Hypothesis
c) Principle
d) Law

23. It is virtually an irrefutable theory:
a) Principle
b) Hypothesis
c) Law
d) None of them

24. It is responsible for spreading malaria in human:
a) Male Culex
b) Female Culex
c) Male Anopheles
d) Female Anopheles

25. A tiny creature which cause malaria:
a) plasmodium
b) Virus
c) Amoeba
d) Bacteria

Fill In The Blanks:

(i) Problem solving approach of biology and other sciences called scientific method.
(ii) Solution of biological problem starts with observation.
(iii) The key component of the scientific process is Hypothesis.
(iv) Scientific reasoning based on “if-then” statement called deductive reasoning.
(v) Final step of the scientific method is developing conclusion.
(vi) The uniform or constant fact of nature, virtually an irrefutable theory is scientific law.
(vii) Once you have the data, you may need to perform mathematical analysis.
(viii) The equation stating that two ratios are equal is called proportion.
(ix) Ratio is comparison of two values.
(x) The cause of malaria is Plasmodium.
1. Science is the systematic study of nature and how it affects us and the environment.
2. The biological method is the step wise process in which a scientist finds out the reason of any biological problem about living things.
3. An observation is a statement of knowledge gained through the senses is called qualitative observation.
4. An observation is a statement of knowledge gained through through the use of scientific equipment is called quantitative observation.
5. A hypothesis is an idea that is suggested as an explanation for a natural event, particular experience, or specific condition that can be tested through definable experimentation.
6. The deductive reasoning involves the use of “if-then” logic.
7. Result includes detailing all observations and data made during your experiment.
8. Conclusion is where all the results from the experiment are analyzed and a determination is reached about the hypothesis.
9. Theories are the well-tested and highly reliable scientific explanations of natural phenomena.
10. A scientific law is a uniform or constant fact of nature.
11. Mathematical biology is a field of research that examines mathematical representations of biological systems.
12. At the core of biology and other sciences lies a problem-solving approach called the scientific method.
13. Latin word: 'mala' means bad, and 'aria' means air.
14. In 1880, a French physician, Laveran, was made the observation that Plasmodium is present in the blood of malaria patients.
15. The intelligent guess made by a scientist in the form of statement, is called Hypothesis.
16. Deductive reasoning moves from general to specific.
17. The next step in the scientific method is to design an experiment based on reasoning.
18. The results are where you report what happened in the experiment.
19. Result verifies the hypothesis.
20. A type of test in which scientist examines blood sample of malaria patient under microscope is called experimental group.
21. A type of test in which scientist examines blood sample of healthy person under microscope is called control group.
22. Scientific theories, are well-tested and highly reliable scientific explanations of natural phenomena.
23. Mathematics plays a critical role in better understanding the natural world.