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ACTIVITY 1 : MICROORGANISM

EXERCISE 1 . UNDERLINE THE CORRECT ANSWER .

1. Microorganisms are (living things / non-living things)

2. “ Micro” means ( tiny / large)

3. Organism means ( living things/ non-living things)4. Microorganism can be fo n! only by (telesco"e/microsco"e)

# $hey e%ist in !i&erent sha"es' si es an! colo r. $hey can be fo n! in

air ' soil' an! ater an! in or on the "lants an! animals. $hey are

( "roto oa / bacteria)

*. $hey eat from live organisms. $hey are the smallest of all

microorganisms. $hey are ( yeast/ vir ses )

+. $hey can be fo n! in la,e' "on!s (,olam)' rivers an! la,es (tasi,). $hey geat foo! from other microorganisms. $hey are ( east/

roto oa)

. $hey can be fo n! on mo l!y brea! an! rotten foo!. $hey are

( roto oa/ 0 ngi)

. ll microorganisms breathe. ring breathing' (carbon !io%i!e

/o%ygen )is ta,en in an! (carbon !io%i!e /o%ygen) is given o t.

1 . $he similarity bet een bacteria an! f ngi is both are ( non-livingthings/ microorganisms)

ACTIVITY 2. WRITE ‘TRUE’ OR ‘FALSE’ IN THE BOXES PROVIDED .

1. 5orms' bacteria an! ants are three ty"es of microorganisms .

2. 5e can see microorganisms ith the na,e! eye.

3. 6i,e h mans' microorganisms breathe' gro an! move

4. magnifying glass can be se! to see some of the microorganisms.

#. $he name of bacterias are accor!ing to their sha"es.

*. $he smallest among all microorganisms is "roto oa.

+. ll microorganisms are harmf l.

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ACTIVITY 3

TOPIC : MICROORGANISM UNDERGO LIFE PROCESSESEXERCISE 3 . Fi i! "#$ % &!'( )i"# *+,,$*" &!()$,(.S+-$&!()$,( -& %$ /($0 ")i*$.

Microorganisms are a) 7777777777777777. $hey come in !i&erent (b)

7777777777777777777 an! (c) 7777777777777777. 5e cannot seemicroorganism thro gh o r na,e! eyes beca se microorganisms are too

(!)7777777777777 in si e. 8o ever' they can be seen by sing a (f)

777777777777777777777.

$here are 9ve gro "s of microorganisms' namely (g)

777777777777777777' (h)777777777777777777777' (i)777777777777777777777' (:)

777777777777777777777777777 an! (,)7777777777777777777777. 6i,e otherliving things' microorganisms can (l) 77777777777777777777777777' (m)

777777777777777777777777777777 an! (n) 777777777777777777777777777777

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ACTIVITY N&-$ "#$ " $ + -i*,++,4&!i(-(CCTS : * &(( i!4D&"$ : 555555555555555555555555555

. ;. <.

< . . =.

0. >. 8

?.

__________________________

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TYPES OF MICROORGANISMS :

FUNGI, VIRUSES, BACTERIA,

PROTOZOA, ALGAE



TOPIC : MICROORGANISMS ARE HARMFUL AND USEFUL.MICROORGANISMS ARE USEFUL.DATE : 555555555555555555555555

1. <om"lete the follo ing statements.

2.

Fi i! "#$ % &!'( )i"# *+,,$*" &!()$,(.

@ome microorganisms are sef l an! some are a) 777777777777777to s. b)7777777777777777777777 is an e%am"le of

microorganism that is i!ely se! in the foo! in! stry. east is a f ng s.

?t is se! in the ma,ing of brea!' cheese' tem"eh an! ta"ai .5hen yeast

is a!!e! to a s gar sol tion' it ses the s gar as a so rce of foo!. 5hen

it c) 7777777777777777777' it ta,es in !)77777777777777777777777777 an!

releases e)7777777777777777777777777777777that can be seen in the

myceli m of the f ng s hen it gro s. <arbon !io%i!e ma,es the brea!!o gh rise.

4

6actobacill s harmf l yeast

breathes o%ygen carbon !io%i!e

f ng s h m s



@ome bacteria' for e%am"le f) 777777777777777777777777 is i!ely

se! in ma,ing yog rt !rin,. ntibiotics s ch as "enicillin are e%tracte!

from "enicilli m' hich is a g) 77777777777777777777

;acteria an! f ngi in soil hich act on grass an! leaves or any other

organic materials an! convert them to h)

77777777777777777777777777777777777 by a "rocess ,no n as

bio!egra!ation.

ACTIVITY 3 : FILL IN THE TABLE WITH THE CORRECT ANSWERS.

;. MICROORGANISMS CAN CAUSED FOOD POISONINGTHROUGH SPOILED FOOD

Microorganisms can ca se foo! to t rn ba!A

0ill in the table ith the corrects ans ers.

TYPES OF FOOD SIGNS OF FOOD THAT HAVE

TURNED BAD Mil,

Begetables

0ish

Cice

5



EXERCISE 1TOPIC : MICROORGANISMS ARE HARMFUL AND USEFUL.MICROORGANISMS ARE USEFUL.

DATE : 555555555555555555555555

1. @tate fo r harmf l actions of bacteria.a) 777777777777777777777777777777777777777777777777777777777777 77777777777777777777777777777777777777777777777777777777777 b)77777777777777777777777777777777777777777777777777777777777 777777777777777777777777777777777777777777777777777777777777 c)77777777777777777777777777777777777777777777777777777777777 77777777777777777777777777777777777777777777777777777777777 !) 7777777777777777777777777777777777777777777777777777777777 7777777777777777777777777777777777777777777777777777777777

E6$,*i($ 2. M&"*# *+,,$*"

6



E6$,*i($ 3

S"&"$ & )& "+ ,$7$!" $&*# 0i($&($ ,+- ( ,$&0i!4

Name of disease Way to pre e!t it from spreadi!"

a)<o gh

b) chic,en"o%

b) "set stomach /

!iarrhea

c) D

2. W,i"$ 8",/$9 +, "#$ *+,,$*" ("&"$-$!"( &!0 ‘ & ($’ +, "#$),+!4 ("&"$-$!"(.

a) ll microorganism are harmf l. $hey ca se foo! too t rn ba! an!ma,e s ill.

b) <a,e' b ns an! mil, are "ro! ce! by sing microorganisms.

c) Microorganisms can be carrie! from "lace to "lace an! s"rea! from one "erson to another

!) atients ho have ? @ sho l! be E arantine! to "revent the !isease from s"rea!ing to another "erson.

e) 0l can be s"rea! by air

f) 5e boil ater before !rin,ing to ,ill the living microorganisms

in ater

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