Plastids are organelles found in plant and algae cells that manufacture and store important chemical compounds. There are three main types of plastids: chloroplasts, which use photosynthesis to produce sugars and starches; chromoplasts, which give fruits, flowers, and stressed leaves their distinctive colors; and leucoplasts, which are non-pigmented. Each plastid type has a different structure and function in the cell.

1. Done by,
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v.Nandhini meenakshi

2. The plastid is a major
organelle found in the cells of
plants and algae. Plastids are
the site of manufacture and
storage of important chemical
compounds used by the cell.
They often contain
pigments used
in photosynthesis, and the
types of pigments present can
change or determine the cell's

4. Types of plastids
Chloroplast
Chromoplast
leucoplast

5. Chloroplasts:
The purpose of the chloroplast
is to make sugars and starches.
They use a process
called photosynthesis
Structurally:

6. Chromoplast
Chromoplasts are found in fruits, flowers, roots,
and stressed and aging leaves, and are responsible
for their distinctive colors. This is always
associated with a massive increase in the
accumulation of carotenoid pigments. The
conversion of chloroplasts to chromoplasts
in ripening is a classic example.

7. Leucoplast
leucoplast are a category of plastid and as such
are organelles found in plant cells. They are non-
pigmented, in contrast to other plastids such as
the chloroplast.
Structurally:-