Solving a biological problem

Which of the following is the correct sequence in biological method of study?

• Observation  $\rightarrow$  Hypothesis  $\rightarrow$  Deduction  $\rightarrow$  Experimentation  $\rightarrow$  Theory  $\rightarrow$  Law

• Observation  $\rightarrow$  Deduction  $\rightarrow$ Hypothesis   $\rightarrow$  Experimentation  $\rightarrow$  Theory  $\rightarrow$  Law

• Observation  $\rightarrow$  Hypothesis  $\rightarrow$  Experimentation  $\rightarrow$  Deduction  $\rightarrow$  Law  $\rightarrow$  Theory
  

• Observation  $\rightarrow$  Hypothesis  $\rightarrow$  Deduction  $\rightarrow$  Experimentation  $\rightarrow$  Law  $\rightarrow$ Theory
  

What would be the best experimental design for testing a hypothesis that bean plants require sodium?

• Measure the amount of sodium in few plants

• Look for sodium in leaf tissues

• Analyze root contents for sodium

• Grow bean plants with and without sodium

A ---------------- is supported by a great deal of evidence.

• Hypothesis

• Theory

• Law

• Principle

Which one of these is NOT a characteristic of a hypothesis?

• Must be consistent with all available data

• Must be testable

• Must be correct

• Must make predictions

At which point is a biologist most likely to use reasoning?

• While taking observation

• During hypothesis formulation

• During data organization

• During deduction

Which one of the following mosquito which transmits dengue fever.

• Anopheles

• Culex

• Aedes

• Culiseta

A gardener sees a large snake nearby. He know that generally snakes sting, so the gardener ran away. The gardener did which of the following?

• Used reasoning

• Used observation

• Constructed a theory

• Tested a hypothesis

A scientific theory has which of the following properties?

• It agrees with available evidence

• It cannot be rejected

• It has been absolutely proven

• It does not need to be altered in the light of new evidence

Experimentation is only a step of the scientific process, but it is very important step because it always __________.

• Gives a biologist a correct result

• Allows rejection of some alternative hypotheses

• Ensures that hypothesis can be confirmed with certainty

• Gives scientists a chance to work in the laboratory

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 questions. Your 20 students of the control group should have all experimental conditions identical to the experimental group EXCEPT that;

• They should take tea with more milk and sugar

• They should take tea before as well as during study

• They should not take tea before study

• After taking tea, they should not sit for study