Microbes

Q.

What are the harmful effects of microbes?

Q.

Name two barriers, which prevent the entry of microbes in the body ?

Q. A pellicle is found in:

1. Chrysophytes
2. Slime molds
3. Euglena
4. Amoeba

Q.

What is the mode of nutrition in phylum Protozoa ?

Q.

Define absorptive and holozoic nutrition?

Q. are organisms that have cell organelles and a well-defined nucleus.

1. Bacteria
2. Prokaryotes
3. Eukaryotes

Q. were the precursors of life on Earth.

1. Viruses
2. Archaea
3. Algae
4. Fungi

Q. Choose the correct statement(s) regarding microbes.

1. Microbes played a key role in the evolution of the planet earth.
2. Certain microbes cause severe infections and diseases.
3. Microbes are always harmful to human beings.
4. Microbes are tiny living creatures which are invisible to the naked eye.

Q.

Mention two animal characters of Euglena.

Q. Very short answer type.
What is the mode of nutrition in Euglena ?

Q.

Which of the following microbes is used in the curation of coffee beans?

1. Bacillus megaterium
2. Aspergillus niger
   
3. Bacillus thuringiensis
   
4. Saccharomyces cerevisiae
   

Q.

________ (tuberculosis/asthma) is an infectious disease that usually affects the lungs.

Q. Identify the microbes.

1. Bacteria
2. Ants
3. Virus
4. Algae
5. Fungi
6. Lice
7. Termite
8. Protozoans

Q.

Microorganisms help in keeping the planet Earth running. Justify, giving two examples.

Q.

Disease-causing biological agents are called __.

Q.

Name three diseases caused by protozoa as infectious agents.

Q. Good microbes prevent the growth of harmful bacteria in our body.

1. False
2. True