Solved MCQs of Biology Class 9
Quantitative observations are considered more accurate than qualitative observation because quantitative are
Invariable
Measurable
Recorded in terms of numbers
All of these
Data may consist by :
Number
Words
Images
All
What would be the best experimental design for testing a hypothesis that bean plants require sodium?
Measure the amount of sodium in a few bean plants
Grow bean plants with and without sodium
Look for sodium in leaf tissues
Analyze root contents for sodium
Quinine is obtained form:
quina-quina
Deodar
Cinchona
Shisham
No of steps of biological method are
Six
Seven
Two
Eight
Experimentation is only a step of the scientific process but it is very important step because it always:
Gives the biologist a correct result
Allows rejection of some alternative hypothesis
Ensures that hypothesis can be confirmed with certainity
Give scientists a chance to work in the laboratory
Which one of the following is correct sequence in biological method?
Observations, Hypothesis , Law, Theory
Hypothesis, observations, Deductions , Experimentation
Observations, hypothesis, Deduction, Experimentation
Law, Theory , Deduction, Observations
Which one of these in “not” a characteristic of hypothesis?
Must be consistent with all available data
Must be testable
Must be correct
Must predictions
The part of mustard plant which yields oil is
Leaf
Seed
Root
Flower
When A.F.A King did work on Malaria?
1880
1881
1882
1883
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