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.