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Question
What are plastids?
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Solution
Plastids are self-replicating organelles present only in plant cells and absent in animal cells. They are of three types:
(i) Chloroplast - Green coloured plastids (due to presence of chlorophyll)
(ii) Chromoplast- Coloured plastids (except green colour)
(iii) Leucoplast - Colourless plastids
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