Cell Cycle and Cell DivisionMedium
Question
An outer covering membrane is absent over
Options
A.nucleolus
B. lysosome
C.mitochondrion
D.plastids
Solution
Nucleolus, discovered by Fontana (1781) and named by Bowman (1840) is a naked roughly rounded darkly stained struture. It is attached to chromatin at specific spot called nucleolar organiser region or NOR. Nucleolus constiyute 35% mass of nucleus and is the largest part of nucleus .
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