Question

how do the prop roots different from the climbing roots?

Answer 1

Prop roots-In many species of Ficus e.g. F .benghalensis, F. elastica' (Moraceae) etc. adventitious roots spring vertically downwards from the horizontal aerial branches and penetrate the earth-these roots become very much thick on touching the grnd and they support the heavy weights of branches like pillars.

(ii) Stilt roots-In Pandanus tectorious (Pandanaceae), stout adventitious roots come But obliquely downwards from the main stem and penetrate the ground in a slanting manner. These roots give additional support to prevent the plant from being uprooted

Answer 2

Differences between prop roots and stilt roots are:
1. Prop roots develop from the upper part of the stem, especially the horizontal branches while stilt roots develop from the basal nodes of the main stem.
2. Prop roots are quite long while stilt roots are comparatively short.
3. Prop roots pass down into the soil in a vertical position while stilt roots develop obliquely at an angle to the stem.
4. Prop roots provide support to the plant like pillars or poles while stilt roots provide support like ropes of a tent or pole.
5. Young prop roots are hygroscopic while young stilt roots are non-hygroscopic.
6. Prop roots are quite thick and massive while stilt roots are comparatively little thick or massive.
7. Prop roots can replace the trunk or main stem while stilt roots seldom replaced the main stem.

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