Page 253 - New Medley 4 Semester 1

live in fresh water, some in salty water and others in the soil. Some protozoa are

parasites and live in the bodies of other organisms. These organisms are called
their host.

Fungi

Fungi are nongreen plants as they do not have chlorophyll.
So, they cannot make their own food. Fungi get their food

from dead and decaying animals and plants.

Most fungi grow in dark, warm and moist places. Some of
them grow in deserts and in very cold places also. Like bacteria,

some fungi are useful while some are very harmful to us. Mushrooms

USEFUL MICROBES

Some microbes are useful to us.

m Some microbes help in manufacturing ice cream, cheese,
vinegar, toothpaste, glue, detergents and medicines.

m Some bacteria and fungi digest the bodies of dead plants

and animals. In this way, they clean the environment.

m The oil-eating microbes help clean the oil spills in the oceans.
m Yeast is a very useful fungi. It is used for making foods

like breads, dosa, idli, dhokla, bhatura, etc. Breads are
made soft and fluffy with yeast.

m Some bacteria are even present in our intestines. They are

useful for the digestion of food.
m Curd-making bacteria change the milk into curd. The Things made with the
help of microbes
more the bacteria, the thicker is the curd.

Activity S E L Self-Management • Life Skills/Hands-on Learning

To make the curd
Follow these simple steps under your mother’s guidance.
l Ask your mother to pour some lukewarm milk into a bowl.
l Add one teaspoonful of curd into the milk.
l Cover the bowl and leave it for 5-6 hours.
Wow! You have curd ready to eat. Taste it.

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