Name: Introduction to the Microbial World
Uploaded: 2019-07-19
Duration: 3 min 38 s
Description: It's time to learn about microorganisms! These are all the tiny little critters in the water, the air, the ground, and inside you. Let's know more about them.

Question

Match the micro-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
(vii) Penicillium	(g) Producing antibiotics

Accepted Answer

(i) - (e)

Cholera is caused by bacteria. Cholera spreads by taking infected food or water.

(ii) - (a)

Rhizobium is the nitrogen fixing bacteria. It resides in root nodules of leguminous plant.

(iii) - (b)

Lactobacillus is the friendly bacteria, which helps in setting of curd.

(iv) - (c)
With the use of yeast, cake is baked. Yeast is a unicellular fungus. It undergoes anaerobic respiration, in which it gives out CO2. This CO2 makes the cake fluffy.

(v) - (d)

Plasmodium is the protozoan, which causes malaria. The disease called malaria spreads through insect bites (mosquito bites).

(vi) - (f)
AIDS is caused by the virus. It is a deadly disease. This disease called AIDS spreads by sharing infected injection needles or through physical contact (sexual contact) with an infected person.

(vii) - (g)

The first antibiotic 'penicillin' was discovered by chance and extracted from the tiny fungus (a mould)
called 'Penicillium'.

A B

(i) Bacteria (e) Causing cholera

(ii) Rhizobium (a) Fixing nitrogen

(iii) Lactobacillus (b) Setting of curd

(iv) Yeast (c) Baking of bread

(v) A protozoan (d) Causing malaria

(vi) A virus (f) Causing AIDS

(vii) Penicillium (g) Producing antibiotics

Important Questions on Micro-Organisms: Friend and Foe

Learn and Prepare for any exam you want !