an innovative approach

Table 4.1 Cont’d
Lesson
3. Structure
and
functions
of chloro
plasts
Periods
(min)
2
(100)
Learning outcomes Concepts
1. Identify where
photosynthesis
take place.
2. Experiment to
find out
pigment taking
place in plant
leaves.
3. Interpret,
analyze and
describe the
structure and
function of
chloroplast.
4. Give some
examples of
photosynthetic
pigment
5. Explain how
photosynthesis
had been
developed.
1. Chloroplasts have internal membranes known as
thylakoids.
2. The region of the chloroplast outside the
thylakoids is called stroma.
3. Stack of thylakoids are known as granum which
tacking is absent is known as stroma thylakoid.
Stack building is grana.
4. The pigments are located in thylakoid
membrane. The pigments are the site of the
light dependent reactions of photosynthesis.
They absorb light energy.
5. All plants and most alga have chloroplast
containing photosynthetic pigments—
chlorophyll, carotenoids, and phycobiliprotein.
6. Some bacteria and blue-green algae
(Cyanobacteria) have no chloroplasts, but have
photosynthetic pigments can photosynthesize.
7. Blue green algae have chlorophyll, caretenoids,
and phycobiliprotein, while bacteria have
bacteriochlorophylls and/or carotenoids.
8. The reaction centre chlorophylls in Photosystem
I (PS-I) absorbs far-red light of the maximum
wavelengths 700 nm. This is called P 700.
9. The reaction centre chlorophylls in photosystem
II (PS-II) absorbs red light of the maximum
wavelengths 680 nm. This is called P 680.
Learning
Activities
1. Playing the
game:
Historical
jigsaw
2. Cooperative
learning
3. Story telling
using the
student
booklet
4. Experimentati
on using
paperchromatograp
hy
Materials Assessment
1. The game:
Historical
jigsaw
2. The student
booklet: Who
had
discovered
the
chloroplast?
chloroplast
3. The lab
direction:
Pigment
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1. Use the game to
probe the preconceptions
about
simple
photosynthesis
process.
2. Use the student
booklet: Who had
discovered the
chloroplast? to
discuss the
importance of
chloroplast
3. Use the lab
direction: Pigment
of the
experimentation to
discuss, practice
and evaluate the
students’
conceptions about
chloroplast.
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