To tackle the question regarding modified supporting roots, we need to identify which plants exhibit prop roots and stilt roots. Let's break down the options and clarify the characteristics of each plant mentioned.
Understanding Prop Roots and Stilt Roots
Prop roots are specialized roots that grow from the stem of a plant and help support it. They are commonly found in plants like the banyan tree, which uses these roots to stabilize itself as it grows larger. On the other hand, stilt roots are a type of aerial root that provide support and are typically seen in plants like sugarcane. These roots help the plant remain upright in its environment.
Identifying the Plants
- Banyan Tree: Known for its extensive prop roots that descend from its branches to the ground, providing additional support.
- Maize (Corn): This plant does not typically have prop or stilt roots; it has fibrous roots that spread out in the soil.
- Sugarcane: Exhibits stilt roots that help it remain upright, especially in wet conditions.
Analyzing the Options
Now, let's evaluate the options provided:
- Option (i) Banyan and Maize: This is incorrect because while the banyan has prop roots, maize does not have either prop or stilt roots.
- Option (ii) Banyan and Sugarcane: This is correct. The banyan has prop roots, and sugarcane has stilt roots.
- Option (iii) Maize and Banyan: This is incorrect for the same reason as option (i); maize does not have the modified roots.
- Option (iv) Sugarcane and Maize: This is incorrect because, while sugarcane has stilt roots, maize does not have any modified supporting roots.
Conclusion on the Correct Answer
Based on this analysis, the only option that correctly identifies the plants with the specified modified roots is option (ii) Banyan and Sugarcane. Therefore, the answer is B. ii only.
