Energy forming reaction.

1. TOPIC
PHOTOSYNTHESIS
BY
MISS. SNEHA A. SONAR.
(M. Sc, B. Ed)

2. PHOTOSYNTHESIS
• (Photon - light, Synthesis - formation.)
• It is an intracellular anabolic process
takes place in plant cells.
• In photosynthesis, glucose molecule is
synthesised by using the simple inorganic
substances such as Carbon dioxide and
Water as a raw material in the presence
of light and chlorophyll pigment.

4. Equation
6CO2+12H2O
Sunlight
Chlorophyll-a
C6H12O6+6H2O+6
O2.

5. Why it occurs in plants?
• Plant's bears the green leaves which
help in photosynthesis.
• Leaves are green due to presence of
Chloroplast in mesophyll cells of the
plant tissue.
• Chloroplast contains the chlorophyll
pigment which is necessary in
photosynthesis.

7. Structure of Chloroplast
A chloroplast is a type of organelle known as a
plastid, characterized by its two membranes and a
high concentration of chlorophyll. Other plastid
types, such as the leucoplast and the chromoplast,
contain little chlorophyll and do not carry out
photosynthesis

8. PHOTOSYNTHETIC
REACTIONS.
LIGHT REACTION
AND
DARK REACTION.

9. Light Reaction
• It takes place inside (Grana) the
thylakoid membrane.
• It takes place in presence of light hence
it is also called as Light dependent
reaction.
• It helps to synthesize :
1. Oxygen
2. ATP
3. NADPH.

10. DARK REACTION
• It takes place in stroma of the
Chloroplast.
• It is does not require light hence also
called as Light Independent
Reaction.
• It helps in the synthesis of
Carbohydrates (Glucose) by using
the end products of light reaction
i.e ATP and NADPH.

12. THANK YOU!