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Question

The protostele in which xylem core is Smooth and rounded is

A
Haplostele
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B
Actinostlele
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C
Plectostele
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D
Siphonostele
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Solution

The correct option is A Haplostele
A- A Protostele is an arrangement of conducting tissues of stem and roots of primitive plants(Pteridophytes) where xylem is surrounded by phloem. A haplostele consists of a central cylinder of Xylem surrounded by phloem. It is soft and rounded.
Example, Rhynia
So, the correct answer is 'Haplostele'

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