Class 9 Biology notes chapter 2

Biology Notes Class-9 Chapter-2

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Biology Notes for Class 9 Chapter 2

Solving a Biological Problem:

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Biology Ch#02, 09th Class

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1 / 62

“If I examine cells from a blade of grass, then each one will have a nucleus”. This statement is a _______

2 / 62

The freezing point of water is ___________

3 / 62

Ronald Ross belonged to _____________

4 / 62

Logical consequence drawn from hypothesis is called __________

5 / 62

In dengue fever, which cells are shortening?

6 / 62

The bark of cinchona contains a chemical, named ___________

7 / 62

The information such as names, dates or values made from observations and experimentation is called ___________

8 / 62

The scientific method in which biological problems are solved is called _________

9 / 62

Ross found mosquitoes multiplying in ______

10 / 62

Era of Biological method in scientific research is __________

11 / 62

The word Malaria is derived from ______ language.

12 / 62

The hypothesis that stands the test of time are called ___________

13 / 62

Malaria in sparrows spread by __________

14 / 62

Blood clotting in food canal of mosquito is prevented by___________

15 / 62

Biological Method comprises of ______

16 / 62

In which year, A. F. A. King listed his 20 observations about malaria?

17 / 62

Plasmodium is transferred by___________

18 / 62

Female mosquitoes need the blood of ________ for the maturation of their eggs.

19 / 62

A theory is supported by a great deal of __________

20 / 62

How many observations were presented by A.F.A king about malaria?

21 / 62

Quinine is obtained from__________ bark.

22 / 62

Which disease has killed more people than any other disease of world?

23 / 62

Computational and statistical techniques for the analysis of biological data are studied in__________

24 / 62

Scientists that use scientific method to make new theories are called _________

25 / 62

When was America discovered?

26 / 62

Weight of one liter of ethanol____________

27 / 62

An irrefutable theory is called _____________

28 / 62

Mosquito that transmits dengue fever is called __________

29 / 62

Galileo performed his experiments in__________

30 / 62

The malaria is spread in birds by _________

31 / 62

Mark the incorrect observation about malaria ___________

32 / 62

"Mosquitoes transmit plasmodium and are involved in spread of malaria" This hypothesis was suggested by _____

33 / 62

Physicians were familiar with malaria ___________years ago.

34 / 62

Malaria is caused by ____________

35 / 62

Laveran began to search for cause of malaria in __________

36 / 62

__________is most basic step of biological method.

37 / 62

Most effective remedy against malaria until 20th century is ___________

38 / 62

“If Plasmodium is the cause of malaria, then all the person ill with malaria should have plasmodium in their blood”. This statement is a called ____________

39 / 62

Ronald Ross performed his experiments in ______________

40 / 62

A proposition that might be true is called ___________

41 / 62

The problem related to living organisms______________

42 / 62

Who started to know the reason of malaria?

43 / 62

Quinine is an effective remedy for ___________

44 / 62

Which one of the following in not the characteristic of a good hypothesis?

45 / 62

A relation between two numbers in terms of quotient is called __________

46 / 62

Quantitative observations are considered ___________

47 / 62

Biological method has been playing an important role for the last___________

48 / 62

Weight of one liter of water is ___________

49 / 62

In “Malaria”, the word “mala” means____________

50 / 62

The tentative explanation of observation is called __________

51 / 62

Female Mosquitoes used by Ross in his experiments ___________

52 / 62

Who is responsible for spread of malaria fever?

53 / 62

Anopheles mosquito causes a disease___________

54 / 62

The bark of ________ tree was very suitable for curing malaria.

55 / 62

Bark of Quina- Quina was used for treating_______

56 / 62

Who discovered Plasmodium?

57 / 62

In biological method the next step of hypothesis is called__________

58 / 62

A Hypothesis that is often tested and never rejected is called__________

59 / 62

Plasmodium was discovered in____________

60 / 62

Summarizing data through the calculation of a mean value is studied in ____________

61 / 62

Proportion is expressed by putting a sign _____________

62 / 62

French Army Physician who worked on malaria in 1878 is __________

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Biology Notes, Short Long MCQs for Class 9th

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Chapter wise PDF Notes / Problems / Solution of Biology 9th Class

                     Chapter-01 – Introduction to Biology

                     Chapter-02 – Solving a Biological Problem

                     Chapter-03 – Biodiversity

                     Chapter-04 – Cells And Tissues

                     Chapter-05 – Cell Cycle

                     Chapter-06 – Enzymes

                     Chapter-07 – Bioenergetics 

                     Chapter-08 – Nutrition

                     Chapter-09 – Transport

                     Pairing Scheme for 2022 – Biology 9th Class