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Different Types of Plastids


Posted Date: 21-Sep-2010  Last Updated:   Category: Education    
Author: Member Level: Gold    Points: 15


This article is about Types of Plastids,Chromoplasts, leucoplasts,Chloroplast,Pheoplasts,Rhodoplasts.



Plastids Definition


Plastids are special cell organelles found in plant cells which are centers of specialized metabolic activities.

Types of Plastids


Plastids are classified into 3 types.

1. Chromoplasts

2. Leucoplasts

3. Chloroplasts


Chromoplasts


The Chromoplasts contain pigments. Chromoplasts is the basic element which decide the colour in flowering plants. They are further divided based on the presence of colour.

Pheoplasts

Pheoplasts contain the pigment fucoxanthin, which is brown in colour. Brown algae, diatoms and dinoflagellates consist of Pheoplasts.

Rhodoplasts

Rhodoplasts contain the red pigment called phycoerythrin. The cells of red algae contain Rhodoplasts.

Leucoplasts


Leucoplasts are the plastids without colour pigments. Leucoplasts in plants are useful for the storage of starch, oil and proteins.

Chloroplast


Chloroplast contains the green pigment chlorophyll a and b. Organisms like Green algae and plants contain Chloroplast.

One form of plastids can be converted into another form .


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