10
Question
The most primitive type of stele is
The most primitive type of stele is
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Solution
The correct option is C Protostele
The earliest vascular plants had stems with a central core of vascular tissue. This consisted of a cylindrical strand of xylem, surrounded by a region of phloem. Around the vascular tissue there might have been an endodermis that regulated the flow of water into and out of the vascular system. Such an arrangement is termed a protostele. Thus, option C is correct. Eustele, solenostele and siphonostele are developed later.
The earliest vascular plants had stems with a central core of vascular tissue. This consisted of a cylindrical strand of xylem, surrounded by a region of phloem. Around the vascular tissue there might have been an endodermis that regulated the flow of water into and out of the vascular system. Such an arrangement is termed a protostele. Thus, option C is correct.
Eustele, solenostele and siphonostele are developed later.
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