Presence of basal rhizoidal cell in Ulothrix is an example of
A
Dead cell
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B
Vestigial cell
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C
Accessory cell
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D
Beginning of division of labour
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Solution
The correct option is D Beginning of division of labour
Ulothrix is an advanced alga, with three types of cells--green dome-shaped apical cell, green intercalary cell, and basal non-green cell called as holdfast.
Holdfast or basal cell is for attachment, it has a nucleus and cytoplasm, its presence shows the beginning of the division of labor.
So, the correct answer is "Beginning of division of labor'.