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Living Organisms MCQ General Science. We covered all the Living Organisms MCQ General Science content in this post. This general science MCQ content will help you to crack all the competitive exams for sure.
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Living Organisms MCQ General Science for Students
Ethology primarily focuses on
a. Animal behavior
b. Species evolution
c. Types of birds by species
d. Human racial differences
Option a – Animal behavior
The microbe found in curd and buttermilk is
a. Fungi
b. Algae
c. Bacteria
d. Virus
Option c – Bacteria
The bacterium responsible for curd formation is
a. Lactobacillus
b. Yeast
c. Penicillium
d. All of the above
Option a – Lactobacillus
Fermentation takes place due to the activity of
a. Lactobacillus
b. Yeast
c. Penicillium
d. All of the above
Option b – Yeast
Which gas is produced during the fermentation process?
a. Oxygen
b. Carbon dioxide
c. Carbon monoxide
d. Hydrogen
Option b – Carbon dioxide
Antibiotics are derived from
a. Bacteria
b. Fungi
c. Viruses
d. Algae
Option b – Fungi
Diseases caused by bacteria include
a. Typhoid
b. Gonorrhoea
c. Tuberculosis
d. All of the above
Option d – All of the above
Antibiotics are effective in treating
a. Bacterial infections
b. Viral infections
c. Fungal infections
d. All types of infections
Option a – Bacterial infections
Penicillium notatum belongs to the group of
a. Bacteria
b. Viruses
c. Fungi
d. Algae
Option c – Fungi
Who discovered the antibiotic ‘Penicillin’?
a. Yellapragada Subba Rao
b. Alexander Fleming
c. Louis Pasteur
d. Edward Jenner
Option b – Alexander Fleming
What gives long-term immunity against diseases?
a. Antibiotics
b. Injections
c. Vaccines
d. Tablets
Option c – Vaccines
What does a vaccine usually contain?
a. Weakened microbes
b. Killed microbes
c. Both a and b
d. Live microbes
Option c – Both a and b
The term “vaccine” comes from the Latin word ‘vaca’, meaning
a. Cow
b. Ox
c. Hen
d. Calf
Option a – Cow
The percentage of nitrogen gas in the atmosphere is
a. 21%
b. 58%
c. 68%
d. 78%
Option d – 78%
Which of the following help in fixing atmospheric nitrogen in soil?
a. Rhizobium
b. Nostoc and Anabaena
c. Azotobacter
d. All of the above
Option d – All of the above
Microorganisms in the root nodules of legume plants are
a. Rhizobium
b. Bacillus
c. Azotobacter
d. Nostoc
Option a – Rhizobium
Who discovered the vaccine for smallpox?
a. Edward Jenner
b. Ronald Ross
c. Louis Pasteur
d. Albert Sabin
Option a – Edward Jenner
Milkmaids with cowpox were found to be immune to
a. Typhoid
b. Smallpox
c. Tuberculosis
d. All of these
Option b – Smallpox
Microorganisms that cause diseases are called
a. Vectors
b. Pathogens
c. Microbes
d. All of these
Option b – Pathogens
The disease caused by Plasmodium is
a. Tuberculosis
b. Typhoid
c. Malaria
d. Polio
Option c – Malaria
The carrier of Plasmodium is
a. Female Anopheles mosquito
b. Male Anopheles mosquito
c. Female Culex mosquito
d. Male Culex mosquito
Option a – Female Anopheles mosquito
Pasteurisation was developed by
a. Edward Jenner
b. Louis Pasteur
c. Alexander Fleming
d. Ronald Ross
Option b – Louis Pasteur
During pasteurisation, milk is heated up to
a. 50°C
b. 60°C
c. 70°C
d. 80°C
Option c – 70°C
Which disease affects both humans and cattle?
a. Foot and mouth disease
b. Anthrax
c. Malaria
d. Viral fever
Option b – Anthrax
What cannot be seen under a compound microscope?
a. Cell wall
b. Cytoplasm
c. Nucleus
d. Electron
Option d – Electron
Plasma membrane is also called the
a. Cytoplasm
b. Cell membrane
c. Nucleus
d. Endoplasmic reticulum
Option b – Cell membrane
The genetic material of a cell is found in the
a. Cytoplasm
b. Mitochondria
c. Nucleus
d. Endoplasmic reticulum
Option c – Nucleus
The fluid enclosed by the plasma membrane is
a. Cytoplasm
b. Mitochondria
c. Nucleus
d. Phloem
Option a – Cytoplasm
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