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 deductionÂ
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