Q.
All types of plastids possess essentially the same structure because they
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AIPMTAIPMT 1992Cell : The Unit of Life
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Solution:
All the plastids have a common origin and one type of plastid can change into another. Plastids are of 2 main types lencoplasts and chromoplasts. The leucoplasts are colourless and occur in the cells not exposed to sunlight. The chromoplasts are coloured occur in the cells exposed to sunlight.