chloroplast of plant

1. Chloroplast

2. What is Chloroplast ?
• Chloroplast is a plastid that contains
chlorophyll and in which photosynthesis takes
place.
• The name Chloroplast came Greek words
“chloros”, which means green, and “plastes”
which means “the one who forms”.
• It was identified by a scientist named Antony
van Leeuwenhock.
• Chloroplast is an elongated or disc-shaped
organelle containing chlorophyll.

3. 3D view of Chloroplast

4. Structure of Chloroplast
•It’s membranes composed of two layers.
1. The outer chloroplast membrane
2. The inner chloroplast membrane
•Thylakoids : Inside the chloroplast there is a three
systems of membranes, forming many tiny flattened
sacs called thylakoids.
• Granum : Stacked thylakoids called granum.

5. Structure of Chloroplast
• Stroma : Inside the outer and inner chloroplast
membranes is the chloroplast stroma.
A semi-gel-like fluid.
It makes up much of a chloroplast's
volume.
In the the stroma the thylakoid
system floats.
• Lamella : Grana are interconnected by inter-
granal lamellae.

6. 2D view of Chloroplast

7. Function of Chloroplast
• Thylakoids contain Chlorophyll and other
accessory pigments which are necessary for
“light reaction”.
• Stroma contains differernt enzymes which is
important for light independent reactions or
the dark reactions.