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8.Cell: The Unit of Life
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What is common between chloroplasts, chromoplasts and leucoplasts?
A
Ability to multiply by a fission-like process.
B
Possession of thylakoids and grana.
C
Storage of starch, proteins and lipids.
D
Presence of pigments
(AIIMS-2006)
Solution
Chloroplast, chromoplast, and leucoplast, all three are types of plastids.
Leucoplast is a colourless plastid, involved in storage of starch lipid and proteins. Being colourless, leucoplasts are devoid of any pigments. (This option A is wrong).
Chloroplast are green coloured plastids containing thylakoids and photosynthetic pigment chlorophyll. Chloroplast are involved in photosynthetic production of carbohydrates.
Chromoplasts are plastids responsible for pigment synthesis. They give distinctive colours to different fruits, flowers and ageing leaves in plants.
All the plastids (chromoplast, chromoplast and leucoplast) are thought to be descended from symbiotic prokaryotes and therefore, they all divide by a fission like process.
Hence the correct answer is 'Ability to multiply by a fission like process'.
Standard 11
Biology
