Question

Atactostele is found in
A. Dicot stem
B. Monocot stem
C. Dicot root
D. Monocot root

Answer 1

Hint: Stele is the term used for the region enclosed by endodermis of the stems or roots. Atactostele is a kind of eustele found in monocots, during which the plant part , within the stem, exists as dissipated bundles. In other words, the structure of stele is a complex type which is termed as atactostele.

Complete step by step answer:
Some points regarding the stele are as follows :
-The stele is the central aspect of the root or stem containing the tissues obtained from the procambium.
-These incorporate vascular tissue, sometimes ground tissue (substance) and a pericycle, which, if present, characterizes the peripheral limit of the stele.
-Outside the stele lies the endodermis, which is the deepest cell layer of the cortex.
-Most seed plant stems have a vascular course of action, which has been deciphered as an inferred siphonostele and is called an eustele.
-There is additionally a variation on the eustele found in monocots, similar to maize and rye.
-The variety has various dispersed groups in the stem and is called an atactostele.
-The vascular packs in an eustele are often collateral (with the phloem on only one side of the xylem) or bicollateral (with phloem on the 2 sides of the xylem, as in some Solanaceae).
-Atactostele is one of the characteristics of a monocot stem.
So, the correct answer is option (B) Monocot Stem.

Note: Atactostele is a kind of eustele. Eustele present in ‘roots of monocot plant’ while Atactostele present in ‘stem of monocot plants’ . In Eustele , the essential vascular tissue comprises vascular packs, normally in a couple of rings around the pith. In expansion to being found in stems, the eustele shows up within the underlying foundations of monocot blossoming plants.