Cell Cycle and Cell DivisionHard

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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