Question

Simplest most primitive stele is _____________.

• A. Atactostele
• B. Protostele
• C. Dictyostele
• D. Stenotele

Answer 1

The correct option is B Protostele

Stele is the column containing vascular tissues and surrounded by pericycle and separated from ground tissue by endodermis. Protostele is the simplest and most primitive type of stele, in which the xylem is in the center of the stem. Also, it is surrounded by a narrow band of phloem. It is a conductive system of simple organization. It can be easily found in primitive vascular plants

So, the correct answer is B.