Page 19 - Innovator's Science-8

Small living creatures called microorganisms live in soil, but they are so tiny
that we cannot see them without the help of a microscope. When soil is

mixed with water, these tiny moving organisms become visible under a
microscope. These microorganisms, also called microbes, include bacteria,
fungi, and tiny animals. They play important roles in nature. The word
"microorganism" means a very small living being, as "micro" means small

and "organism" means a living thing. Scientists use microscopes to see
these tiny creatures because our eyes alone cannot see them.
Science A group of students also collected information from the library and
Bytes
internet. They recorded the data obtained after observing pond water and
Testimony the data obtained after observing soil suspension. They identified the
Microbiology is the
scien fic study of microorganisms as protozoa, algae, fungi, and bacteria. To study these
microorganisms. microorganisms more closely, we can collect water and soil samples and
Microbiology is a vast observe them under a microscope.
area of science, and it is
divided into many Microorganisms observed in pond water
subfields of study.
S.No. Diagram Remarks

Amoeba Single cell, moving, irregular
1.
(Protozoa) shape

Single cell, moves from one
Paramecium place to another, movement
2.
(Protozoa) takes place with the help of
specialised structures
Single cell, looks green because
of the presence of green pigment,
3. Algae
movement takes place with the
help of specialised structures

Organisms observed in soil suspension
S.No. Diagram Remarks

Bread Branched filament without
1. mould chlorophyll having sac-like
(Fungi) structure

Branched filament without
Mould
2. chlorophyll having brush-like
(Fungi)
structure

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Science-8