Worksheet

Syllabus Study Notes

Did you know more people die from falling coconuts then from shark attacks.

In any situation, the best thing you can do is the right thing; the next best thing you can do is the wrong thing; the worst thing you can do is nothing– Theodore Roosevelt

Class VIII >> Science >> Microorganisms >> A1

Q1	Nitrogen and Oxygen combine in the atmosphere during lightning to form __________.
A	Hydrogen
B	Nitrogen Oxide
C	Carbon Dioxide
D	Nitrates

Q2	Process in which vaccine is given to improve the immunity of the body against specific disease is called __________.
A	Fermentation
B	Vaccination
C	Pasteurisation
D	Preservation

Q3	Organisms that are visible only with the help of a microscope are called __________.
A	Pathogens
B	Carriers
C	Microorganisms
D	Bacteria

Q4	What is the process of breaking down nitrogen compounds into ammonia called?
A	Nitrification
B	Nitrogen Cycle
C	Ammonification
D	Fermentation

Q5	Insects that transmit disease-causing microbes to a healthy person are called __________.
A	Pathogens
B	Antibodies
C	Virus
D	Carriers

Q6	Name the instrument that is used to observe the microorganisms.
A	Telescope
B	Stethoscope
C	Microscope
D	Kaleidoscope

Q7	Which of the following is a medium through which harmful microorganisms enter the body of a healthy person?
A	Air
B	Water
C	Food
D	All of the Above

Q8	The ability of one's body to resist infection is known as __________.
A	Antigens
B	Immunisation
C	Immunity
D	Fermentation

Q9	Name the method of preservation in which foodstuff is heated to a high temperature and then cooled rapidly.
A	Fermentation
B	Pasteurization
C	Decomposition
D	Food Preservation

Q10	Microorganisms are __________.
A	Single-celled
B	Multicellular
C	Either Single-celled or Multicellular
D	Neither Single-celled nor Multicellular

Available Time

Time Left

Bonus Time Left

GoforPractice is an online structured PRACTICE PLATFORM for school students of CBSE board India. We strive to make practice fun and engaging for students and help them achieve their goals efficiently. Our practice tests are handcrafted for a thorough understanding of concepts using contemporary and modern learning techniques. With elaborate explanations and chapter-wise revision listing, our ecosystem provides resources to elevate students from a basic to an advanced level of performance.