You must complete SS1 Biology Second Term Examination (Mock) to unlock this Lesson.

MICRO-ORGANISMS IN ACTION

CONTENT

  1. Meaning of Micro-organisms
  2. Types of Micro-organisms
  3. Growth of Micro-organisms: Ways of Measuring the Growth of Microorganisms
  4. Beneficial Effects of Micro-organisms in Nature, Medicine and Industries
  5. Harmful Effects of Some Microbes

 

Meaning of Micro-organisms

Micro-organisms are very small living things which are normally not visible to the naked eye but can be seen with the help of a microscope.

Types of Micro-organisms

Micro-organisms include the following:

(i) All Viruses e.g. Polio virus, Smallpox virus, etc.

(ii) All bacteria e.g. Salmonella, Clostridium, Treponema, Escherichia coli, etc.

(iii) All protozoans e.g. Plasmodium, Trypanosoma, etc.

(iv) Some fungi e.g. Rhizopus (mould) and Yeast (e.g. Saccharomycetes).

(v) Some algae e.g. diatoms, dinoflagelletes, etc.

(vi) Blue-green algae e.g. Nostoc

Micro-organisms live everywhere, in water, air, soil, inside and outside of plants and animals including human beings. There are many more microorganisms than visible plants and animals in the world.

Lesson tags: Biology Lesson Notes, Biology Objective Questions, SS1 Biology, SS1 Biology Evaluation Questions, SS1 Biology Evaluation Questions Second Term, SS1 Biology Objective Questions, SS1 Biology Objective Questions Second Term, SS1 Biology Second Term
Back to: BIOLOGY – SS1 > Second Term
© [2022] Spidaworks Digital - All rights reserved.
error: Alert: Content is protected !!