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Microorganisms

Description: Microorganisms
Number of Questions: 10
Created by:
Tags: Microorganisms Micro-organisms Micro-Organisms and Diseases
Attempted 0/10 Correct 0 Score 0

Which of the following statements is not true for microorganisms?

  1. We cannot see them with naked eyes.

  2. A special device called microscope is required to see them.

  3. They have a high degree of adaptability and can survive in almost all kinds of environment.

  4. They cannot survive in our body.


Correct Option: D
Explanation:

The correct option is (4).

What type of cellular organisation is present in protozoa?

  1. Unicellular eukaryotic

  2. Multicellular eukaryotic

  3. Multicellular prokaryotic

  4. Unicellular prokaryotic


Correct Option: A
Explanation:

The correct option is (1).

Which of the following organisms reproduces only within the cell of host organism?

  1. Bacterium

  2. Protozoa

  3. Virus

  4. Rhizopus


Correct Option: C
Explanation:

The correct option is (3).

Red algae is used in the preparation of ice cream and chocolate because it yields

  1. algar

  2. algin

  3. casein

  4. rennin


Correct Option: B
Explanation:

The correct option is (2).

Which of the following diseases has now been eradicated from the whole world through vaccination?

  1. Polio

  2. Small pox

  3. Rabies

  4. AIDS


Correct Option: B
Explanation:

The correct option is (2).

Which of the following is a causative organism for rabies?

  1. Bacteria

  2. Virus

  3. Protozoa

  4. Fungi


Correct Option: B
Explanation:

The causative agent is a neurotropic rhabdovirus that is often present in the saliva of infected animals and is usually transmitted to humans through the bite of a rabid animal.

Which of the following diseases generally occurs during the rainy season due to bad personal hygiene and poor sanitation?

  1. Common cold

  2. Polio

  3. Rabies

  4. Gastroenteritis


Correct Option: D
Explanation:

The correct option is (4).

Which of the following organisms performs photosynthesis?

  1. Mushroom

  2. Alga

  3. Amoeba

  4. Plasmodium


Correct Option: B
Explanation:

From all the above given organisms, only alga can perform photosynthesis.

Which of the following diseases spreads through water?

  1. Common cold

  2. Chicken pox

  3. Cholera

  4. Malaria


Correct Option: C
Explanation:

Cholera is an infection of the small intestine by some strains of the bacterium Vibrio cholerae. It is spread mostly by water and food that has been contaminated with human feces containing bacteria.

Which of the following bacteria helps to fix the atmospheric nitrogen in the root nodules of leguminous plants?

  1. Rhizobium

  2. Rhizopus

  3. E. coli

  4. Mucor


Correct Option: A
Explanation:

The correct option is (1).

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