1. acquires knowledge of a) living organisms, b) micro organisms, c) plant viruses, d) animal viruses, e) algal viruses and mico virus, f) bacterial viruses. 2. understands the function of Baceriophage and TMV
as
3. applied the scientific knowledge of virus to our health 4. develops skills in drawing the diagram of TMV and Bacteriophage
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5. appreciates the mass polio vaccine programme in India. SPECIFICATIONS :
The pupil 1.
recalls the micro – organisms, viral diseases
2.
recognizes the various viruses, a) plant viruses, b) animal viruses, c) algal viruses and mico viruses, d) bacteriophages - T4
3.
observes the shape of various plant viruses in the chart
4.
differentiate between a) plant and animal viruses b) Bacteriophage and TMV
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identifies the shape of the virus, names of scientists, common cold virus and vaccine.
m
5.
classifies various virus types
7.
locates nuclic acid
8.
compares the shape of TMV, Bacteriophage and DNA.
9.
reasons the use of preventive medicine
ar
.c o
6.
iriy
10. draws the diagrams of TMV and Baceriophage 11. labels the parts of the diagram of TMV and Bacteriophage 12. realises the significance of blue green algae and polio vaccine
as
Chart, Thermacol model of Bacteriophage
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TEACHING AIDS:
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LEARNING EXPERIENCES
Plants and animals
EVALUATION
What are the two major groups of
.c o
recalls
CONTENT
m
SPECIFICATIONS
living organisms?
recalls
We can not see very small organisms through Can you see very small organisms
recalls
through your eye?
ar
our eye. Micro organisms are very small
What
will
you
call
very
small
illustrates
iriy
organisms
Bacteria and virus are micro organisms
Give an example for the micro organisms?
as
recognizes
Viruses causes polio and flu
parasites identifies
Which is the cause for polio and flu?
viruses - smallest organisms which live like Teacher explains viruses.
ww w.
identifies
In 1892, Dimitry Ivanowsky an discovered Who discovered virus? viruses 1935 Stanly crystalised the tobacco
discovered?
mosaic virus (TMV) recognises
The study of viruses in known as virology
In which year virus was
What is the name of the study of virus?
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Viruses are classified are plant viruses
Teachers
explained
m
classifies
the An another name of animal
classification of viruses
.c o
Animal viruses (common cold)
virus is called ……………..
Algal viruses (cynophages)
ar
Mico viruses (mycophages) observes
Teacher displays the chart showing
identifies
Bacteriophage
–
Rod
as
iriy
the shape of plant viruses
shaped,
spherical The pupil identifies the various Which
recognises
ww w.
shaped – polygonal shaped – Brick shaped
shaped
is
virus
a in
brick the
diagram?
Structure simple – crystallizable metabolic The plant viruse is explained by the What is the size of the activities, respiration are not recorded.
locates
shape of the viruses.
one
It
has
a
nucleic
acid
surrounded by protein coat.
in
the
teachers. centre Where do you find nuclic acid?
virus?
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either DNA or RNA.
m
Protein coat is called capsid. Nucleic acid How do you call protein coat? Size of the virus very
form 20-30nm, they infect the plant and causes diseases.
Teacher displays the chart of TMV.
iriy
ar
observes
.c o
recognizes
draws
The pupil (1) Draws the structure of TMV, (2) labels the part of TMV.
recognizes
as
labels
Rod shaped – length 300 nm – diameter in The structure of TMV is explained
What is TMV?
ww w.
18nm – RNA surrounded by protein coat – capsid – capsid made up of identical protein sub units. recognizes
They are polygonal in out line – very small – Teacher explained animal viruses
What is the size of the
size 22 to 33nm single RNA – common cold is
animal virus?
caused by virus
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Animal virus is the reason for common cold
What is the reason for our common cold?
Plant virus
Animal virus
Rod shaped
polygonal shaped
Nuelic acid
RNA
DNA or RNA
recognizes
.c o
virus and animal virus?
22-33nm
iriy
Size 20-300nm
What is the difference between plant
ar
differentiates
m
identifies
Algal viruses – 1963 sufferman and morris – Algal virus is explained by the Algal viruses infecting the infecting
at the centre. Virus attacking fungi known as Mycoophages.
In
what
way
blue
green
algae
relevant to out agriculture
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We see lot of mushrooms
After rainy season what do you see
m
recalls
in the decaying wood or organic
identifies
.c o
matter.
Agaricus biporus
What is the botanical name of
observes
ar
mushrooms?
T4 BACTERIOPHAGE
Teacher
displays
the
chart
of
iriy
Bacteriophage The pupil:
as
a) draws the diagram
draws
compares recognises
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labels
b) labels the part of diagram
Bacteriophage having hEad and tail as like Teacher compares the shape of as tadpole. tadpole and bacteriophage. Head hexagonal, Tail cylindrical. Head join Teacher explained bacteirophage with tail by means of collar. Base of the tail
Base plate of bacteriophage
have basal plate.
is
present in the head. and six tail fibres.
Double strand DNA is Basal plate six prong
having
………………
………….
and
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reasons
Bacteriophage Bacterial virus Tadpole like Double strand DNA
Pupil differentiate between TMV and
m
TMV Tobacco mosaic virus Rod shape Single strand RNA
bacteriophage
.c o
differentiates
Attacks by bacteria we give drugs, for attacks Why we use preventive medicine to
ar
by virus there is no drug we give preventive avoid attacks by virus? medicine
The name of the preventive medicine is How do we call preventive medicine?
iriy
identifies
vaccine
Polio is very nasty dangerous disease. It Teacher
significance
attacks human limbs. So all children in India vaccine
as
realizes the
explained day
about
adopted
in
polio India
were given polio vaccine in a massive scale recently. In December 6 and
ww w.
throughout India. January 17. REVIEW:
Various types of viruses – plant virus – shape of virus – the structure of TMV – animal virus– Algal virus – Mico virus – Bacteriophage – T4.
ASSIGNMENT:
1. Describe the TMV with neat labelled sketch. 2. Describe the structure of Bacteriophage – T4
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