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Important Questions Test: Microorganisms Friend And Foe - 2


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20 Questions MCQ Test Science & Technology for UPSC CSE | Important Questions Test: Microorganisms Friend And Foe - 2

Important Questions Test: Microorganisms Friend And Foe - 2 for Class 8 2023 is part of Science & Technology for UPSC CSE preparation. The Important Questions Test: Microorganisms Friend And Foe - 2 questions and answers have been prepared according to the Class 8 exam syllabus.The Important Questions Test: Microorganisms Friend And Foe - 2 MCQs are made for Class 8 2023 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Important Questions Test: Microorganisms Friend And Foe - 2 below.
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Important Questions Test: Microorganisms Friend And Foe - 2 - Question 1

Penicillium is a

Detailed Solution for Important Questions Test: Microorganisms Friend And Foe - 2 - Question 1

Penicillium ascomycetous fungi are of major importance in the natural environment as well as food and drug production. Some members of the genus produce penicillin, a molecule that is used as an antibiotic, which kills or stops the growth of certain kinds of bacteria.

Important Questions Test: Microorganisms Friend And Foe - 2 - Question 2

Malaria is caused by

Important Questions Test: Microorganisms Friend And Foe - 2 - Question 3

Mushrooms belong to

Detailed Solution for Important Questions Test: Microorganisms Friend And Foe - 2 - Question 3

Mushroom, the conspicuous umbrella-shaped fruiting body (sporophore) of certain fungi, typically of the order Agaricales in the phylum Basidiomycota but also of some other groups.

Important Questions Test: Microorganisms Friend And Foe - 2 - Question 4

Rhizobium bacteria

Important Questions Test: Microorganisms Friend And Foe - 2 - Question 5

Cocci are ____ shaped bacteria.

Important Questions Test: Microorganisms Friend And Foe - 2 - Question 6

Amoeba belongs to

Detailed Solution for Important Questions Test: Microorganisms Friend And Foe - 2 - Question 6 Amoeba, also spelled as Ameba, is a genus that belongs to protozoa, which are unicellular eukaryotes (organisms with membrane-bound cell organelles). The name Amoeba is derived from the Greek word amoibe, which means change. There are many species, of which the most extensively studied is Amoeba proteus. Majority of the species are very minute and are not visible to the naked eye. In spite of its small size, the genomic content is several times more than the human genome. The species A. dubia consists of about 370 billion base pairs; whereas, human genome has about 3 billion base pairs.
Important Questions Test: Microorganisms Friend And Foe - 2 - Question 7

Microorganisms are

Important Questions Test: Microorganisms Friend And Foe - 2 - Question 8

Spirogyra is

Detailed Solution for Important Questions Test: Microorganisms Friend And Foe - 2 - Question 8

The correct answer is A as Spirogyra is
 A kind of  algae

Important Questions Test: Microorganisms Friend And Foe - 2 - Question 9

Scientist who discovered the fermentation

Important Questions Test: Microorganisms Friend And Foe - 2 - Question 10

Amount of nitrogen in atmosphere is

Detailed Solution for Important Questions Test: Microorganisms Friend And Foe - 2 - Question 10

The air in our atmosphere is composed of molecules of different gases. The most common gases nitrogen  (78%), oxygen (about 21%), argon (almost 1%) and carbon dioxide (0.03%). Other molecules are present in  the atmosphere as well, but in very small quantities. Composition of air is measured in percent by volume,  at sea level at 15C and 101325 Pa.

Important Questions Test: Microorganisms Friend And Foe - 2 - Question 11

 Microorganisms can be seen with naked eyes.

Detailed Solution for Important Questions Test: Microorganisms Friend And Foe - 2 - Question 11

B is the correct option.Microbes are minute, unicellular organisms that are invisible to the naked eye. They are also known as microorganisms or microscopic organisms as they could only be seen under a microscope or magnifying glass.

Important Questions Test: Microorganisms Friend And Foe - 2 - Question 12

Viruses can only multiply in a living cell.

Detailed Solution for Important Questions Test: Microorganisms Friend And Foe - 2 - Question 12

The correct option is A.
Viruses are ultramicroscopic organisms that are visible only through electron microscopes. Therefore, they need to infect a host cell.  The virus gets inside the host cells and makes hundred and thousands of copies of itself by using the host machinery.

Important Questions Test: Microorganisms Friend And Foe - 2 - Question 13

Louis Pasteur was the first scientist who discovered the Penicillin.

Detailed Solution for Important Questions Test: Microorganisms Friend And Foe - 2 - Question 13

Sir  Alexander Fleming, is credited with the discovery of Penicillin in 1928.
So, the given statement is false.

Important Questions Test: Microorganisms Friend And Foe - 2 - Question 14

Rhizobium is a bacteria which can fix the atmospheric nitrogen.

Important Questions Test: Microorganisms Friend And Foe - 2 - Question 15

Mushroom is a fungi.

Important Questions Test: Microorganisms Friend And Foe - 2 - Question 16

Disease‑causing microorganisms are called pathogens.

Detailed Solution for Important Questions Test: Microorganisms Friend And Foe - 2 - Question 16

The correct answer is A as A pathogen may also be referred to as an infectious agent, or simply a germ. The term pathogen came into use in the 1880s. Typically, the term is used to describe an infectious microorganism or agent, such as a virus, bacterium

Important Questions Test: Microorganisms Friend And Foe - 2 - Question 17

Anthrax is the common disease in human and other animals.

Detailed Solution for Important Questions Test: Microorganisms Friend And Foe - 2 - Question 17

The correct answer is A as it is caused by  a bacteria called bacillus anthrasis

Important Questions Test: Microorganisms Friend And Foe - 2 - Question 18

Oxygen and nitrogen make the 78% of air.

Important Questions Test: Microorganisms Friend And Foe - 2 - Question 19

Edward Jenner discovered the process of fermentation.

Detailed Solution for Important Questions Test: Microorganisms Friend And Foe - 2 - Question 19

Louis Pasteur discovered the process of fermentation within the yeast cells in 1856.
So, the given statement is incorrect.
As, Edward Jenner developed smallpox vaccine in 1796.

Important Questions Test: Microorganisms Friend And Foe - 2 - Question 20

Foot and mouth disease is the bacterial disease in animals.

Detailed Solution for Important Questions Test: Microorganisms Friend And Foe - 2 - Question 20

Foot and mouth disease (FMD) is a severe, highly contagious viral disease of livestock that has a significant economic impact. The disease affects cattle, swine, sheep, goats and others.
So, as it is a viral disease ; the given statement is incorrect.

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