Select the group of plants that possess stilt roots.

(a) Zea mays, Rhizophora mangle

(b) Pandanus odoratissimus, Ficus benghalensis

(c) Rhizophora mangle, Hedera helix

(d) Ficus benghalensis, Pisum sativum

To identify the group of plants that possess stilt roots, we need to understand what stilt roots are and which plants typically exhibit this characteristic. Stilt roots are specialized aerial roots that grow from the trunk or branches of certain plants, providing additional support and stability, especially in unstable or wet environments.

Characteristics of Stilt Roots

Stilt roots are primarily found in plants that grow in challenging conditions, such as mangroves or tropical rainforests. These roots help anchor the plant in soft, muddy soils and can also assist in nutrient uptake. They typically emerge from the lower part of the plant and extend down into the ground, resembling stilts.

Identifying the Correct Group

Now, let’s analyze the options provided:

• (a) Zea mays, Rhizophora mangle: Zea mays, or corn, does not have stilt roots, while Rhizophora mangle, commonly known as the red mangrove, does possess stilt roots.
• (b) Pandanus odoratissimus, Ficus benghalensis: Pandanus, or screw pine, has aerial roots that can function similarly to stilt roots, and Ficus benghalensis, or the banyan tree, also develops stilt roots for support.
• (c) Rhizophora mangle, Hedera helix: Again, Rhizophora mangle has stilt roots, but Hedera helix, or English ivy, does not possess this type of root structure.
• (d) Ficus benghalensis, Pisum sativum: Ficus benghalensis has stilt roots, while Pisum sativum, or pea plants, do not exhibit this characteristic.

Conclusion on the Correct Answer

Based on this analysis, the best answer is (b) Pandanus odoratissimus, Ficus benghalensis. Both of these plants are known for their stilt roots, which help them thrive in their respective environments. Understanding the adaptations of these plants can provide insight into how they survive and flourish in challenging conditions.