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तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता ८

Disease causing microorganisms are called pathogens. - Science

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प्रश्न

Disease-causing microorganisms are called pathogens.

पर्याय

  • True.

  • False

MCQ
चूक किंवा बरोबर

उत्तर

Disease-causing microorganisms are called pathogens- True.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 16: Microorganisms - Exercises [पृष्ठ १८९]

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सामाचीर कलवी Science [English] Class 8 TN Board
पाठ 16 Microorganisms
Exercises | Q III. 1. | पृष्ठ १८९

संबंधित प्रश्‍न

Alcohol is produced with the help of _________.


Match the organisms in Column A with their action in Column B.

  A   B
(i) Bacteria (a) Fixing Nitrogen
(ii) Rhizobium (b) Setting of curd
(iii) Lactobacillus (c) Baking of bread
(iv) Yeast (d) Causing Malaria
(v) A protozoan (e) Causing Cholera
(vi) A Virus (f) Causing AIDS
    (g) Producing antibodies

Can microorganisms be seen with the naked eye? If not, how can they be seen?


Rewrite the following statement using correct of the option and explain the completed statement.
Process of -- -- -- -- of milk proteins occurs due to lactic acid.


Give a scientific reason.

Use of mutant strains has been increased in industrial microbiology.


Observe the following figure and answer the questions :

  1. Identify the process shown in the figure. 
  2. Explain the process in short.

State whether the following statement is true or false. Explain your statement.

Tomato wilt is a viral disease.


Give reasons.

A refrigerator is used in almost every home.


Complete the following conceptual picture:


How disease causing microorganisms enter into human beings?


Name the four major groups of Microbes.


Unscramble the jumbled word underlined in the following statement.

Cells of our body produce santiidobe to fight pathogens. 


Match the names of scientists given in Column A with the discovery made by them given in Column B.

Column A Column B
(a) Louis Pasteur (i) Penicillin
(b) Robert Koch (ii) anthrax bacterium
(c) Edward Jenner (iii) Fermentation
(d) Alexander Fleming (iv) small pox vaccine
  (v) Typhoid

While returning from the school, Boojho ate chaat from a street hawker. When he reached home, he felt ill and complained of stomach ache and fell ill. What could be the reason? 


Assertion (A): Boiling milk is a method of preservation.
Reason (R): Probiotic is a method of preserving milk.


The major constituent of vinegar is ______.


‘Cry’ protein is produced by the bacteria ______.


Name the scientist who first discovered the penicillin antibiotic. Can you name any other known antibiotic?


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