Solved MCQs of Biology Class 9 Chapter 2

A.F.A King supported his hypothesis by about ____________ observation.

10

15

20

25

Mendal experimented on ____________ plants.

Potato

Pea

Rose

Pine

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

They should take tea before as well as during study

They should not take tea before studing

They should not sit for studing

Cinchona tree is also known as.

Guina guina

Quina Quina

Both

None

………….. set up the largest land empire ever known.

Aristotle

Alexander

Laveran

Genghis khan

A gardner sees a large snake nearby. He knows 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

Which of the followings is the symptom of malaria?

Chills

Fevers

Recurring attacks

All

Plasmodium was named by:

Ross

A.F.A.King

Laveran

None

Who suggested that mosquitoes are involved in the transmission of malaria?

Laveran

Ronald Ross

A.F.A king

None of these

No of steps of biological method are:

Seven

Six

Two

Eight