Which of the following roots are of permanent type on sugarcane cane setts?

✅ Explanation:
-Shoot roots are the permanent roots in sugarcane that develop from the shoot buds on the cane setts (stem cuttings used for planting). These roots are responsible for the long-term anchorage and nutrient uptake of the sugarcane plant.

📌 Other Options Explanations:
-(a) Sett roots: These are temporary roots that emerge from the root band of the sett. They help in the initial establishment of the plant but are later replaced by shoot roots.
-(c) Prop roots: Prop roots are adventitious roots that grow from the lower nodes of the sugarcane stem. They provide additional support to the tall plant.