Below are the Top 30 Biology MCQs with Show answers:
Top 30 Biology MCQs:
1➤ Which one of the following is correct sequence in biological method?
ⓑ Hypothesis, Observations, Deduction, Experimentation
ⓒ Observations, Hypothesis, Deduction, Experimentation
ⓓ Law, Theory, Deduction, Observation
2➤ Which one of these is not a characteristic of a hypothesis?
ⓑ Must be testable
ⓒ Must be correct
ⓓ Must make predictions
3➤ At which point, is a biologist most likely to use reasoning?
ⓑ During hypothesis formulation
ⓒ During data organization
ⓓ None of the above
4➤ 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
ⓒ The hypothesis is proven wrong
ⓓ The opposite of hypothesis is tested and proven wrong
5➤ What would be the best experimental design for testing a hypothesis that bean plants require sodium?
ⓑ Look for sodium in leaf tissues
ⓒ Analyze root contents for sodium
ⓓ Grow bean plants with and without sodium
6➤ 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 observation
ⓒ Constructed a theory
ⓓ Tested a hypothesis
7➤ A scientific theory has which of the following properties?
ⓑ It cannot be rejected
ⓒ It has been absolutely proven
ⓓ It does not need to be altered in the light of new evidence
8➤ Experimentation is only a step of the scientific process but it is very important step because it always:
ⓑ Allows rejection of some alternative hypotheses
ⓒ Ensures that hypothesis can be confirmed with certainty
ⓓ Give scientists a chance to work in the laboratory
9➤ 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 question. Your 20 students of the control group should have all experimental conditions identical to the experimental group EXCEPT that;
ⓑ They should take tea before as well as during study
ⓒ It does not need to be altered in the light of new evidence
ⓓ After taking tea, they should not sit for study
10➤ The scientific method in which biological problems are solved is termed as;
ⓑ Biological method
ⓒ Non-biological method
ⓓ Statistical method
11➤ Biological method has been playing an important role for the last;
ⓑ 500 years
ⓒ 600 years
ⓓ 1000 years
12➤ It should be a general statement belongs to:
ⓑ Hypothesis
ⓒ Theory
ⓓ deduction
13➤ Deductions are drawn from;
ⓑ Experiment
ⓒ Hypothesis
ⓓ None
14➤ Tentative explanation of observations is called:
ⓑ Hypothesis
ⓒ Theory
ⓓ Law
15➤ Logical result of hypothesis is:
ⓑ Deduction
ⓒ Observation
ⓓ Experiment
16➤ Number of steps of biological method are:
ⓑ 6
ⓒ 7
ⓓ 8
17➤ The basic step of biological method is;
ⓑ Experiments
ⓒ Observation
ⓓ Hypothesis
18➤ Plasmodium causes the spread of disease:
ⓑ T. B
ⓒ Polio
ⓓ Malaria
19➤ Plasmodium is transferred by:
ⓑ Virus
ⓒ Mosquito
ⓓ Bacteria
20➤ If Plasmodium is the cause of malaria, then all persons ill with malaria should have Plasmodium in their blood. The above statement is a:
ⓑ Deduction
ⓒ Theory
ⓓ Law
21➤ Dengue fever is transmitted by:
ⓑ Anopheles mosquito
ⓒ Aedes mosquito
ⓓ All of these
22➤ which disease had only treatment quinine from 17th to 20th century?
ⓑ Malaria
ⓒ Tuberculosis
ⓓ Dengue fever
23➤ Malaria is spread in sparrows by mosquito:
ⓑ Anopheles
ⓒ pinus
ⓓ cactus
24➤ The cause of malaria is:
ⓑ Plasmodium
ⓒ paramecium
ⓓ virus
25➤ The branch of tree suitable for treating malaria?
ⓑ cinchona
ⓒ pinus
ⓓ cactus
26➤ The hypothesis that stand the test of time and never rejected becomes:
ⓑ Results
ⓒ Theories
ⓓ None of these
27➤ The growth of plasmodium in human body is:
ⓑ In small intestine
ⓒ In liver
ⓓ In kidneys
28➤ Ronald ross performed experiments in:
ⓑ 1880
ⓒ 1885
ⓓ 1888
29➤ An effective drug for malaria is:
ⓑ Quinine
ⓒ Actified
ⓓ Theragran
30➤ A scientific law is an irrefutable:
ⓑ Principal
ⓒ Observation
ⓓ Deduction
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