Biology Class 9th

81. Malaria is a disease that is transmitted to people by the infected virus.

A) True

B) False

82. Malaria is a disease that is transmitted to people by the healthy mosquito.

A) True

B) False

83. Malaria is a disease that is transmitted to people by the infected mosquito.

A) True

B) False

84. Which one is the first step in biological method?

A) Hypothesis

B) Experiment

C) Observation

D) Deduction

85. What is the correct experiment to know that plasmodium destroyed red blood cell.

A) Examine the blood of a single healthy person

B) Examine the blood of a single infected person

C) Allow mosquito to bite a healthy person and examine his blood

D) Examine the blood of some healthy and also some infected persons.

86. What is the best way to analyse the data collected from experiments?

A) Reading the data and drawing the conclusion

B) Discussion with scientist

C) Simple calculations on calculator

D) Application of statistical formulae.

87. People who slept near smoky fire has less chance to suffer from malaria. Why?

A) Smoke kill plasmodium in their blood

B) Fire increase temperature and plasmodium are killed in the air

C) Mosquitoes cannot tolerate smoke and are repelled

D) Smoke kills plasmodium present in mosquitos

88. Which one of the following is NOT a characteristic of hypothesis?

A) It must be consistent with all available data

B) It must be testable

C) It must be correct

D) Must make deduction 

89. Deductions are made from ____

A) Observation

B) Hypothesis

C) Experiment results

D) Solution of biological problem

90. Which one of the following is true about the statement of hypothesis?

A) Logical

B) Possible answers

C) Based Upon observation

D) All of them

91. The actual answer to scientific problem is :

A) Observation

B) Hypothesis

C) Data

92. Which mosquito can transmit plasmodium in human being?

A) Anopheles

B) Culex

C) Aedes

D) All of these

93. Which mosquito transmit virus of dengue in human being.

A) Aedes

B) Anopheles

C) Culex

D) All of these

94. Streptomycin, Neomycin, and Erythromycin are derived from ____

A) Bacteria

B) Fungi

C) Virus

D) None of these

95. There are ______ plants which depend on bees for pollination.

A) 130,000

B) 120,000

C) 140,000

D) 150,000

96. ______ is a method by which biologists divide organism into groups and subgroups.

A) Gathering

B) Class

C) Classification

D) None of the above

97. _____ classified organism on the basis of habitat.

A) Abn e sina

B) Bu Ali Sina

C) Aristotle

D) None of these

98. On the basis of habitat, fish and tortoise can be placed in one group.

A) True

B) False

99. Heterotrophs are photosynthetic.

A) True

B) False

100. Autotrophs are non-photosynthetic.

A) True

B) False