Correct option is D
The stele initials are the root initials that give rise to the root vascular system, including the pericycle. The stele consists of the vascular tissues such as xylem and phloem, and the pericycle, which is the layer of cells just outside the vascular tissue that gives rise to lateral roots. The differentiation of stele initials is essential for the development of the vascular system and the proper functioning of the root.
Information Booster
- The stele is the central cylinder of vascular tissue in roots and stems, and it includes the xylem, phloem, and pericycle.
- The pericycle is a layer of cells just inside the endodermis in roots and is responsible for the formation of lateral roots.
- The stele initials are derived from the initials in the root meristem, which undergo differentiation to form the vascular tissues.
- The vascular system formed by stele initials is vital for the transport of water, minerals, and nutrients within the root and plant.
- The differentiation of stele initials into vascular tissues is crucial for the overall growth and health of the plant.
- Stele initials are involved in the formation of structures like the vascular bundle, which is responsible for nutrient and water transport throughout the plant.
Additional Information
- Option (a): Columella initials are involved in the formation of the columella (the inner core of the root cap) and do not contribute to the vascular system or the pericycle. Therefore, option (a) is incorrect.
- Option (b): Epidermal-lateral root cap initials are responsible for forming the outer layer of the root and the root cap, which protects the growing tip of the root, but they do not form the vascular system or the pericycle. Thus, option (b) is incorrect.
- Option (c): Cortical-endodermal initials form the cortex and endodermis in the root, which are important for the absorption of water and nutrients but do not give rise to the vascular system or pericycle. Therefore, option (c) is incorrect.
